Skip to main content

William Mark Montgomery

Family Attorney at Mckinney, TX

4.6   9 reviews
  • State Years
    New Mexico - NM 2 years
    Texas - TX 32 years
  • Licensed for 2 years
    State NM
    Acquired 2022
    Active No misconduct found
  • Licensed for 32 years
    State TX
    Acquired 1991
    Eligible to Practice in Texas No misconduct found

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

About William

Learn William’s areas of practice.

W. Mark Montgomery (“Mark”) has a long and successful history as a diligent researcher and public speaker since early in his life. He was a state champion in debate during high school and either won or placed all four years of high school and was State of Oklahoma runner up in extemporaneous speaking his senior year.

Mark parlayed his early debate success into a full scholarship at Southeastern Oklahoma State University where he won numerous awards in debate against national competitors, including winning the University of Florida tournament as a freshman while competing against all classifications. During his senior year, Mark decided to help the team by giving up his eligibility and instead coached the team when the regular coach suffered an injury from house fire that prevented him from traveling with the team; Montgomery’s extensive research and key communication skills enabled him to be a successful coach, sending several teams on to the debate National Tournament.

Mark obtained his Masters while he continued coaching the university speech and debate team. Taking a break from coaching, Mark spent a year as the city editor of The Henryetta Daily Freelance. It was here that Montgomery felt the yearning to get into the courtroom as he learned how local government and politics shaped so much of people’s lives. The next year while studying for the legal bar admittance test, Mark taught and coached at the Jenks, Oklahoma Middle and High School which is a 6A school with a great reputation for its academic and sports programs. In the year that he served there, Mark successfully coached another team to the Cross Examination National tournament.

With his successful debate background, Mark was awarded the Leon Jaworski scholarship to Baylor University. This scholarship, named for the former Watergate prosecutor, was given each year to 2 or 3 former debaters who also showed excellence in the Classroom. After finishing law school, Mark couldn’t wait to get into the Courtroom so he decided to take a position as an Assistant County Attorney in Grayson County. Mark had a first chair jury trial his second day of work. Working in a medium sized county provided Mark the opportunity to move to felony prosecution in less than a year. By the time MARK left the DA office for private practice, he was the chief prosecutor for crimes against children.

In 1994, Montgomery left Grayson County and joined George Parker and Associates where he became a partner leading a wide variety of cases including family law, custody, wrongful death, criminal defense, probate, personal injury, and civil work, both for both plaintiff and defendant. The wide variety of cases presented has seasoned Mark as a well rounded litigator. In 2001 he was named by his peers as the top personal injury litigator in Collin County (Texas Lawyer). In addition he has been involved in a broad range of a cases including murder cases, child abuse cases, as well as consumer protection cases (Texas DTPA).

Mark has expanded his client services with his mediation practice, using his knowledge of the Collin County judicial system to help other litigants settle their cases. He serves as local counsel for many firms throughout Texas, and receives much of his business from client referrals. He feels that the ultimate compliment is to receive a referral from a former opponent, which is a frequent occurrence.

Mark remains eager to serve new clients and has put together a great team to help make sure that the Law Offices of Mark Montgomery do the best job possible for his customers.


Law Offices of Mark Montgomery
108 S Church St
Mckinney, TX, 75069-4454

Family lawyers nearby


4.6 / 5.0
  9 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Courtney | April 1, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Personal injury made RiGHT
I was parked at a gas pump, and semi came through wrong entrance, side swiping and demolitioned my vehicle...the driver gave false information to not only me but the cop. It was almost like I had been robbed, the trucking company tried to just let it go.... I was referred to attorney Mark Montgomery in McKinney TX. His office was committed to getting me a honest settlement, after knowing the driver was dishonest. Mark staff was so well managed and reassured me, they would try for the best possible outcome. Thank for focusing on my my case and taking care of me as your client.
Read less
Posted by Syd | November 7, 2017
This review is from a person who hired this attorney.
| Hired Attorney
My Saving Grace
My case was a very complicated one; there was a criminal case going on, a civil/family case, and I was being sued. Needless to say, it was beyond ugly! On top of that, my first lawyer, despite the fool proof ammo she was given, she not only not only failed miserably, but gave the opposing council and my ex the upper hand. Long story short, Montgomery had to do some serious damage control to even let it be an even playing field. I've never seen anything like him in the courtroom!! He is calm, tactful, assertive, compassionate, aggressive, patient,... whatever he needs to be. He's a pitbull in the courtroom! Unlike anything I've seen, or have even ever heard of! Him and his team are absolutely remarkable! They gave me my life, and more importantly, my family back! I hope I never need a lawyer again, but if I do, Montgomery's my man! I have, and will continue to, refer my loved ones to him. I can't thank you enough Montgomery & team!!!
Read less
Posted by Richard | September 6, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney
Mark has represented me on multiple occasions for different reasons with positive results. Each time I felt that I was dealing with someone who is honest and truly has my best interests at heart. I would absolutely recommend Mark and his team to anyone needing a true ally when navigating the legal system.
Posted by Don | August 26, 2017
This review is from a person who hired this attorney.
| Hired Attorney
The best in the area
Mark and his partner David truly work in your best interest as a team. Taking a personal approach and speaking with you on a down to earth level to help you feel comfortable with the representation they will give. Honest and fair in every way possible. Thanks Mark and David....
Posted by anonymous | October 19, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney
I was referred to Mark Montgomery for my divorce several years ago and I could not have been happier. I found him to be very knowledgeable and just the right amount of aggressive on my behalf in court. I found him to be an attorney who genuinely fights for his client and is very passionate about doing so. We ended up getting nearly everything we set out to get for my side and for me what was best is that he fought harder and was more knowledgeable than opposing counsel. I hired him a second time when my 21 year old son was arrested for DUI and after reviewing the facts we went to trial and Mr Montgomery was again excellent in the courtroom and fought hard and won the case, and rightfully so we thought, but I felt the same as I did the first time I hired him in being completely happy with his knowledge, ability and willingness to fight for us. I would highly recommend Mark Montgomery.
Read less
Posted by Keith | September 21, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Stalwart Attorney
I hired Mark to represent me. Throughout the process Mark made sure I was very informed. He did an excellent job! He actually cares about you. I refer him every chance I get.
Posted by anonymous | August 20, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney
Mark Montgomery is an excellent attorney. Having worked for the largest law firm in the United States and Europe I was extremely impressed with his knowledge of the law, his caring personality, his unwavering determination to make sure I was properly taken care of and that justice was done. If I ever find myself needing an attorney again I wouldn't hesitate to call Mr. Montgomery and neither should you. I highly recommend him.
Read less
Posted by anonymous | March 13, 2009
Excellent Counsel
Mark Montgomery is excellent. He tells it like it is and does not give a false sense of security in family law matters. Nothing is black and white in family law; however, Mr. Montgomery gives all scenarios up front. He has been in practice for a long time and knows his way around the courts. His staff is excellent and attentive as well. Mr. Montgomery is exactly what I was looking for. I needed an attorney that was agressive, but knew to pick his battles to offer the most cost effective representation. At no time have I felt Mr. Montgomery was working on issues just for billable hours. He has delivered exactly what we hoped to accomplish and maintained a reasonable balance due for his services.
Read less
Posted by anonymous | August 2, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Very Disappointed and unethical!
Mr. Montgomery was referred to me by a friend. He was nice in the beginning, but always seemed in a rush. I hired him for a retainer of $3k for divorce which was an infidelity case. He didn't prep me before temporary hearing date. Spoke to paralegal most of the time. At the temporary hearing I was so distraught I thought we were putting in place temporary orders and it was a final agreement. The temporary spousal support was for 1 month, but I was on disability and no job. I had nowhere to live and had to be out by May which gave me 1 month. I had to negotiate with my husband to stay longer. The settlement was not in the best interest of me or to start my life over. He charged me for every email that were duplicates and sometimes never even answered. I had requested he get my husband to release the funds agreed upon and he never did anything in regards to it. Charged me anyways for calls. He also was handling my criminal assault charge which was self defense. I retained him for that too. The first appearance date he didn't show, had someone else show and never spoke to me. Then reset the hearing again 2 more times and then decided he was going to drop me 2 days before my court appearance date and had to request a court appointed attorney. He then sent in for a hearing to dropped my divorce case. The court date was the following month and I was sent to the ER the day before by ambulance for an emergency procedure and my court hearing was the next morning to appear before the judge. When I called from the ER to explain the seriousness of the situation he refused to reset the withdraw date. I was a no show for my court appearance and didn't even get to speak with the judge. He charged me for all of the withdrawal forms and apprearances to withdraw. He is not empathic nor does he try to work with you. He is by far the worst lawyer I have come across with no ethics. I'm still without a job, living on a disability check and my divorce is final in October with no attorney. I will be appealing my divorce case due to the lack of representation and best interest on my behalf. I have been advised to report to law board.
Read less
Response from William Montgomery August 21, 2016
Unfortunately some expectations can not be met. This is rare ,but our firm strives to meet the needs of each and every client. I am sorry that this individual feels this way and without going into detail we feel that our firm tried to meet the expectations of this particular person. We will work to do better. I will add that the person that referred this client continues to refer clients to me and has for years . This is the only negative feedback that person has received as well.
Read less
View less reviews


We have not found any cost information for this lawyer

Contact for Details


AVVO RATING 7.0 (Very Good)


  • Baylor University School of Law
  • Doctor of Jurisprudence/Juris Doctor (J.D.)
  • 1991

Languages Spoken

  • English

Attorney endorsements

Received (3)
Given (3)
Endorse William
Personal injury Attorney | Jun 27
Relationship: Worked together on matter
"I have experience in handling $1,000,000+ automobile collision cases and when I needed help from an attorney in the McKinney, Texas area, I contacted Mark. With Mark's help we were able to finish the case and my client and I could not be any happier. If I ever personally need an attorney in Texas, I will hire Mark. I highly recommend him."
Unknown Attorney | May 23
Relationship: Fellow lawyer in community
"Mark is a top notch lawyer who is extremely capable, be it a family law matter or a personal injury case. I highly recommend Mark."
Family Attorney | Feb 06
Relationship: Fellow lawyer in community
"I would recommend Mark without reservation."
Personal injury
Criminal defense

Avvo Contributions

This attorney hasn't created any legal answers in Q&A or legal guides recently on Avvo.

Mckinney Family Lawyer William Mark Montgomery
William Mark Montgomery
Family Attorney
Mckinney, TX
Licensed for 32 years