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Matheu D Nunn

Appeals Attorney at Denville, NJ

4.8   16 reviews
  • Licensed for 15 years
    State NJ
    Acquired 2007
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Matheu

Learn Matheu’s areas of practice.

Practice areas
  1. Appeals

    16 years

  2. Family

    13 years

Matheu D. Nunn, a Partner and Board Member of Einhorn Barbarito, co-chairs the firm’s Family/Matrimonial Practice and co-chairs its general Appellate Practice. Mat has a wide array of experience representing individuals from all fields, including but not limited to: athletes, business owners, entertainers, executives, financial services, lawyers, physicians, police officers, and teachers—as well as the spouses of individuals in those fields. Mat, a former county and municipal prosecutor, is an experienced litigator; he has tried jury and bench trials and has been counsel in more than 60 Appellate Division and Supreme Court matters, including:

-Lapsley v. Sparta Twp., 249 N.J. 427 (2022);
-Bisbing v. Bisbing, 468 N.J.Super. 112 (App. Div. 2021);
-Lapsley v. Sparta, 466 N.J. Super. 160 (App. Div. 2021);
-State v. Andrews, 243 N.J. 447 (2020);
-Woytas v. Greenwood Tree, 237 N.J. 501 (2019);
-Bisbing v. Bisbing, 230 N.J. 309 (2017);
-Quinn v. Quinn, 225 N.J. 34 (2016);
-In re J.E.V., 226 N.J. 90 (2016);
-Bisbing v. Bisbing, 445 N.J. Super. 207 (App. Div. 2016);
-In re J.E.V., 442 N.J. Super. 472 (App. Div. 2015); and
-Clark v. Clark, 429 N.J. Super. 61 (App. Div. 2012).

At 40, Mat has already received the following recognition from peers as well as legal publications:

-Consecutive "Attorney of the Year" Finalist (New Jersey Law Journal, 2017 & 2018);
-Super Lawyers Publication: Family (2013, 2015, 2018-2022); Appeals (2016-2017, 2019); Criminal (2014);
-"Best Lawyers in America," Family Law (since 2018);
-"Trailblazer" in Divorce/Family Law (National Law Journal, 2017);
-"Leaders of the Bar" (New Jersey Law Journal, 2015); and
-"AV Preeminent-rated" (highest possible rating) by Martindale-Hubbell (since 2014).

To the extent this is considered an advertisement, "No aspect of this advertisement has been approved by the Supreme Court of New Jersey." For criteria, see:

Contact Matheu

Einhorn Harris
165 East Main Street
Denville, NJ, 07834


4.8 / 5.0
  16 customer reviews
5 Star
4 Star
3 Star
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1 Star
Posted by anonymous | October 1, 2022
This review is from a person who hired this attorney.
| Hired Attorney
I Concur, Look No Further
I read the reviews of Mat: "best of the best", "look no farther [sic]", "hardworking, sincere", "true pro", "cares and wants to help", "your best interests in mind", etc. Based on my experience, those reviews are accurate, not hyperbole. We hired Mat to represent us in a gut-wrenching grandparent visitation case. Mat was recommended to us by a former president of the American Bar Association. Mat was the only attorney he recommended, and I can see why. We interviewed other great attorneys who had been recommended by those in the know, but Mat was easily the best. Mat demonstrated a superior understanding of the case law, some of which resulted from cases he won previously. He also demonstrated a deeper concern for effectiveness. Mat is a gifted writer. His legal briefs were crafted with a clear vision and a deep understanding of the law. He "dropped the mic" on the opposing attorney in our case. Unless you are an A-list celebrity, I do not think you will find a better advocate than Mat - intelligent, grounded, skilled, genuine, hard working. On a pesonal level, I miss our interactions with Mat. With regard to fees, Mat worked very efficiently and was more than fair. It was crystal clear throughout that his intent was to fight to help us, not to make money. Mat is good enough to be the difference between winning and losing.
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Posted by Ankur Shah | May 1, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Hardworking, sincere and persevering!
I hired Mr. Nunn for representing me in a custody related appellate matter. From the initial meeting, I felt that Mr. Nunn genuinely cared about my son and beleived in my cause. He gave me great advise, kept me honest and grounded throughout - in terms of the possible outcomes, and became someone whose advise and guidance I deeply trusted. Throughout representing me, Mr. Nunn handled my matter with great empathy, diligence and passion and also kept me updated timely on the progress of my case. He is extremely knowledgeable in all things family law/custody related. Not only is Mr. Nunn a terrific attorney, he also a very patient, caring and honest professional - all great qualities to have in an attorney dealing with emotional family law matters. I would absolutely recommend Mr. Nunn and his team at Einhorn to anyone who needs specialized representation in custody related matters.
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Posted by Aneliya | November 10, 2021
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
A true professional who cares and wants to help
I am an attorney who needed a fellow attorney's advice in a custody case. I was reading published and unpublished custody Appellate Court decisions and that's how I initially found Mr. Nunn. He represented the prevailing party/parent in all of the decisions I read. I contacted him regarding my custody case. He responded very quickly and I scheduled a consultation. Mr. Nunn was very thorough, reviewed previously submitted paperwork and provided valuable advice and insight. More importantly, he genuinely cared about my son's safety and his best interest. I could tell immediately Mr. Nunn is not only an experienced litigator but an attorney who truly cares about his clients and their concerns. I could also immediately tell Mr. Nunn is very passionate about his job and truly enjoys what he does. THANK YOU! I would highly recommend Mr. Nunn to anyone who needs an attorney in a family matter.
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Posted by Missy | September 22, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Best of the Best
Matheu Nunn’s mastery of the law arms his clients with a distinct advantage over the adversary. If you are searching for the best attorney to get you the best possible outcome Look no further.
Posted by Mike | March 13, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Matheu Nunn will get the job Done
I met Matheu through a family friend who was a partner at his law firm. I had just been to Court with my former attorney for my first Post Judgement litigation. (I fired him before we even left the Court House). In that proceeding my ex wife’s attorney managed to rewrite my original MSA and parenting time agreements by introducing a Right of First refusal which had never existed before. In addition to restricting the amount of time I could have with my children due to my work schedule, my ex wife’s attorney was also able to persuade the Court to limit the time my children could spend with their grandparents and my fiancé now wife. To say I came to Matheu with a Mt. Everest sized mountain to climb would be an understatement. Matheu took my case running, he successfully filed a motion to reconsider to fix all the errors of my previous attorney. Matheu knew my case inside and out, answered every question and when we walked into the Court room it was clear he was by far the sharpest knife in the drawer. Matheu respectfully argued my case before a well respected Judge who basically had no other choice then to reverse her earlier decisions much to the dismay of my mentally troubled ex wife. As other people have correctly noted he has an unsurpassed knowledge of Case Law he also has a presence in the Court room that can’t be overstated. I’m writing this review in the hope of saving someone from the heartache I experienced by hiring the wrong attorney the first time around. If your looking for a family law attorney who can best represent you look no further then Matheu Nunn.
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Posted by Amy | April 2, 2020
This review is from a person who hired this attorney.
| Hired Attorney
If you have found Mat Nunn, look no farther!
Mat represented me when my spouse filed a motion to discontinue my alimony. To say that I am thrilled with the work he did is an understatement. He did an absolutely amazing job. He recognized obscure legal issues that ultimately worked in my favor (something that attorneys I had consulted with prior to him were unable to do). He negotiated skilfully on my behalf. He wrote a brief that succinctly detailed the case law, statutory law and legislative history for the judge. He emotionally supported me, providing advice and a clear head, during a time that was difficult for me. He gave me valuable advice. And, he won me a settlement beyond what I had hoped for. Throughout the process, I felt like I was his only client, even though I know he had many others. He was always available when I needed him to explain a legal issue or to calm me down. I can't recommend him strongly enough. If he is representing you, you are in amazing hands.
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Posted by anonymous | January 10, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Awesome Attorney
I have just won my post, post divorce case. It was a very challenging and stressful case as there were many moving parts. Mat is by far one of the best attorneys I have ever worked with. His knowledge, preparation, communication, work ethic and his unique etiquette in treating me with respect and kindness make him a very valuable attorney. In the courtroom, he showed superiority during his cross examination. If you are lucky enough to have him on your side, you've already won. You will not only be in awe of his many skills but he will make the process as stress free as possible.
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Posted by anonymous | April 4, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Excellent attorney
Matheu was the attorney for our case. He is intelligent and masterful in the court room. He works well with other professionals. Matheu was not only professional, but appeared to genuinely care about our case. I highly recommend him.
Posted by Mo | September 28, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Sharp and caring
Mattheu remembers everything you tell him, and he cares about the cases he takes on. I didn't know him before my case, and I have had other attorney's throughout my entire divorce and custody matters, so I know how to compare attorney's. If you're fortunate enough for him to take your case, rest assured you couldn't find better representation. Looking back at everything I've done, I wouldn't have changed a thing and have no regrets with everything Matt and I have done for me to have prevailed, and I currently have custody of my 4 year old son with Matt's help, when I was dealing with a very adversarial ex wife. I have recommended a close friend of mine to him, and would do the same for anyone out there. His big victories in the media/news aren't just about the changes he's brought to the entire state of NJ, but behind that, he personally cared about my case, and I never felt otherwise. He was even praised by the Judge (on the record) on what excellent and professional papers he has submitted for my case. He had my back during one of the most rough times in my life, and I would re-use him any day I would need him.
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Posted by jcw | March 20, 2015
Mathue Nunn has YOUR best interest in mind.
Matheu's professionalism with handling my divorce was what everyone hopes to obtain when retaining an attorney. His knowledge of the law combined with having myself and MY CHILDREN's best interest in mind eased the pain through a difficult process. He and his firm do not waste money with frivolous email, calls or other forms of communication and spent my dollars wisely. If you want an attorney that has your back, I strongly recommend Mathue Nunn.
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Posted by Wendy | August 25, 2014
Excellent Divorce Lawyer !!!!
I highly recommend Mr. Nunn as a divorce lawyer. Throughout my case he demonstrated his comprehensive knowledge of NJ state laws as it related to my situation. He was very responsive in his communications and I had the utmost trust in Mr. Nunn.
Posted by anonymous | August 25, 2014
Excellent choice
I hired Matt Nunn and Mark Wechsler to represent me in my divorce. Matt is extremely knowledgeable on the laws and really cares about his clients and their best interests. He is an excellent communicator and very well respected in the industry. Whatever situation Matt is faced with, he is willing and able to use all of the resources available to him at Einhorn Harris allowing him to advise the client with the best solutions. I would not hesitate to recommend Matt to anyone and would be willing to use him again without hesitation.
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Posted by anonymous | January 26, 2014
Highly recommend--family law
Mat represented me in a divorce from myhusband. He and Mark Wecsler were on top of everything. I could not have been happier. They were pricey, but you get what you pay for. I would recommend them and would higher them again if needed.
Posted by Francis | October 23, 2012
The next Superlawyer!
I was reeling from a divorce trial gone terribly wrong. My ex-wife's "egregious" behavior left me and our kids financially destitute in a rental duplex here in NJ while she spent our family money in a luxury Florida townhouse. Inexplicably, the trial judge acknowledged her fault but ordered me to pay $2,600 monthly alimony anyway. I was hopeless. Bonnie Frost and Matheu Nunn of Einhorn, Ascher and Harris assured me they would help me. Matheu proceeded to write the most magical Appellate brief and argued it successfully. My alimony was extinguished and the decision published. Now, Matheu's amazing accomplishment will help others like me for the rest of time. Even the trial judge whose divorce order was appealed called Matheu up to thank him for putting a "point on the stick" for egregious behavior and its implications for future use in arriving at family law decisions that are no longer just legal decisions but just ones as well. Thank you Einhorn, Ascher and Harris and thank you Bonnie Frost. However, a very special, heartfelt and grateful thank you goes out to my "new best friend", Matheu Nunn; the next SUPERLAWYER! My kids and I are forever in your debt for a job very well done!
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Posted by anonymous | August 13, 2012
Kept me out of trouble!
Matt represented me in a criminal matter in Somerset County. I was facing some minimal jail time, but was concerned. Matt was always there with me and kept me informed AND he kept the penalties to a minimum.
Posted by anonymous | July 23, 2014
Great reviews from friends.
It is ironic how Matheu Nunn's reviews are so positive yet his handling of my case was a complete disaster from day one. He never took control of the case other than from the point when it was turned over to him from another co-attorney in his office. He messed up my case and then told me he was no longer handling my case. He is too worried about his other jobs priorities rather than his less important clients.
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Response from Matheu Nunn October 24, 2022
I am sorry you feel that way. Bear in mind, while I am writing this I clearly know who you (the reviewer) is. Although I am ethically constrained to not disclose any information about any of my clients, it is unfortunate that you resorted to AVVO to air your feelings (anonymously). This would be akin to someone anonymously leaving poor reviews of a restaurant, doctor, repairman, etc., out of vengeance. I wish you the best of luck and I am sorry that our attorney-client relationship could not continue. You were no less important than any other client. And, for the record, I represent clients at varying income levels, from the highest-level executives, to those with limited means.
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Contact for Details


AVVO RATING 10.0 (Superb)

Work Experience

  • Partner/Chair, Matrimonial and Appellate Practice
  • Einhorn, Barbarito, Frost & Botwinick, PC
  • 2012 - Present
  • Prosecutor
  • Morris Township Muncipal Court
  • 2012 - 2015
  • Assistant Prosecutor, Appellate and Major Crimes
  • Morris County Prosecutor's Office
  • 2009 - 2012
  • Law Clerk--Hon. Jack M. Sabatino
  • Appellate Division Of The Superior Court Of New Jersey
  • 2008 - 2009
  • Law Clerk--Hon. B. Theodore Bozonelis
  • Superior Court of New Jersey, Law Division, Morris County
  • 2007 - 2008
View all work experience


  • Rutgers, The State University of New Jersey School of Law - Camden
  • JD - Juris Doctor, with Honors
  • 2007
  • University of Delaware
  • BA - Bachelor of Arts
  • 2004

Legal Cases

  • Bisbing v. Bisbing, __ N.J. __ (2017)
  • Reversed
  • Quinn v. Quinn, 225 N.J. 34 (2016)
  • Reversed
  • State v. Baum
  • Affirmed
View all legal cases


  • Morris County Bar Association
  • Member
  • 2007 - Present
  • New Jersey State Bar Association
  • Appellate Practice Committee
  • N/A

Languages Spoken

  • English

Honors and Awards

  • Attorney of the Year - Finalist
  • New Jersey Law Journal
  • 2017
  • Trailblazer
  • National Law Journal
  • 2017
  • Rising Star-Appellate Practice
  • Super Lawyers Magazine
  • 2017
  • Rising Star-Appellate Practice
  • Super Lawyers Magazine
  • 2016
  • Rising Star-Family Law
  • Super Lawyers Magazine
  • 2015
  • New Leaders of the Bar (formerly Top 40 Under 40)
  • New Jersey Law Journal
  • 2015
  • AV Preeminent Rated (highest possible rating)
  • Martindale-Hubbell
  • 2015
  • Rising Star-Criminal Law
  • Super Lawyers Magazine
  • 2014
  • Top 40 Under 40
  • The National Trial Lawyers
  • 2014
  • Top 100 Trial Attorney
  • The National Trial Lawyers
  • 2014
  • Rising Star-Family Law
  • Super Lawyers Magazine
  • 2013
View all awards


View all publications

Speaking Engagements

  • Nuts & Bolts of Appellate Practice (w Judge Sabatino, Judge Stern, Judge Axelrad)
  • Appellate Practice
  • 2013
  • "Hot tips for Family Lawyers"
  • Family Law
  • 2012
  • State Police Academy
  • "Trial and Grand Jury Testimony"
  • 2011
  • Nuts & Bolts of Appellate Practice
  • Appellate Practice
  • 2011
  • New Jersey State Bar Association
  • "Privacy Issues in Family Law"
  • 2011
  • "The Infrequent Fliers Program - Doing it Right on Appeal" - Panelist - New Jersey State Bar Association Convention
  • Appellate Practice
  • 2011
  • Morris County Police Academy
  • Principles of Search & Seizure"
  • 2010
  • Morris County Police Academy
  • Law of Interrogation
  • 2010
View all speaking engagements

Attorney endorsements

Received (5)
Given (5)
Endorse Matheu
Divorce and separation Attorney | Dec 02
Relationship: Opposing Counsel on matter
"I have had a number of cases with Mat as opposing counsel over the years. I have found him to be a strong adversary and a zealous advocate for his clients, while always being professional to me, his peers and in the court. Mat is also an attorney whom I will reach out to when I want an opinion on an issue or legal advice, and he is always willing to lend a hand. He is well-respected in the field and provides an excellent balance to his clients of being aggressive and strong, while also being settlement-oriented."
Family Attorney | Apr 25
Relationship: Supervised lawyer
"I endorse this lawyer. Mr. Nunn is an excellent attorney with a great pedigree as an attorney. When I was Morris County Prosecutor, Mr. Nunn was one of my Assistant Prosecutors. He is a skilled lawyer and advocate, great on the law, and a great writer. He also has the unique ability to combine those legal research skills, with great presentation skills in the courtroom (a unique combination, in my experience). He is a tough advocate, but is always professional in his approach. No worries using this attorney for your matter. You will be well served."
Family Attorney | Jan 13
Relationship: Worked together on matter
"Matheu is one of the great legal minds in the State of New Jersey. We worked together at the Morris County Prosecutor's Office and on several major crimes cases together. Matheu is intelligent, professional, ethical and a frequent contact in my practice for consultations."
Family Attorney | Nov 20
Relationship: Fellow lawyer in community
"Mat is a tremendously effective advocate for his clients. He is well prepared, thoughtful, and always thinks of unique solutions to difficult problems. I strongly endorse this lawyer."
Unknown Attorney | Nov 17
Relationship: Fellow lawyer in community
"I have had the opportunity to handle cases against Mr. Nunn, as well as discuss matters with him as a colleague. He is both, a tough opponent and a consummate professional. I highly recommend this attorney."
Criminal defense
Criminal defense
Criminal defense