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Mark Rush Williamson

Divorce and separation Attorney at Dallas, TX

4.9   99 reviews

also known as Mark Williamson


Licensed for 37 years

About Mark

Learn Mark’s areas of practice.

I focus my practice entirely on family related cases and work with only a few, select clients at any given time. I make it a priority to provide personal attention to each client. My goal is to resolve your unique case quickly in a civilized manner. However, we will always be prepared to use our experience and skills to litigate as hard as necessary to protect your children, your assets, and your future, both inside and outside of the courtroom.

Licensed for 37 years
State TX
Status Eligible to Practice in Texas
Acquired 1985
Updated 10/23/2022

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

Contact Mark

Sullivan, Klocke & Williamson, P.C.

Reviews

4.9 / 5.0
  99 customer reviews
Posted by Marc | March 4, 2021
This review is from a person who hired this attorney.
| Hired Attorney
The Best
Mark and his team are super excellent family attorneys. They handled my divorce case with great professionalism and personal attention. When my case, which in my opinion could have been an easy uncontested property only divorce, turned into a protracted difficult challenge due to my ex and opposing counsel's crazy lawyering, Mark expertly protected and guided me through the whole ordeal and brought the case successfully to the finish line. I highly recommend him.
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Posted by Pat | January 15, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Child Custody
A year ago our family went thought an emotional and physically draining child custody case. We were blessed to have Mark recommend to us. Mark and his team work with us thought the court hearings, visitation, and always kept us up to date on the facts. He understood the pain and concern we were going thought. He or his team was always there to answer our question or concerns. We now have custody of our three happy, loving and caring kids. Thank you, Mark
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Posted by Heather | September 9, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommend!
Mark and his colleagues were professional and reassuring while guiding me through a difficult divorce. Throughout the process communication was a priority and my questions were answered quickly with complete transparency. Mark prepared me in what the process would look like every step of the way. I highly recommend Mark and SKW without hesitation.
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Posted by David | May 4, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Professional and honest
Mark Williamson and his colleagues at Sullivan Klocke and Williamson Law Firm are professional while also personable and kind. My case was a smooth process thanks to them, and I wouldn't hesitate to recommend them to others.
Response from Mark Williamson May 9, 2022
David, thank you for sharing your positive experience with SKW! We always love to hear when our clients are satisfied with the work we perform. We appreciate having you as a client!
Posted by David | April 5, 2022
This review is from a person who hired this attorney.
| Hired Attorney
In good hands.
I am so pleased that I have been fortunate enough to have been connected with an attorney that is everything you would hope for in a lawyer, that is, experienced, brilliant, tactical, confident and charming. Who wouldn't want a friend like this in your legal corner?
Response from Mark Williamson May 9, 2022
David, we are thankful you connected with SKW and appreciate you sharing your satisfaction with our work!
Posted by John | December 6, 2021
This review is from a person who hired this attorney.
| Hired Attorney
The Right One!
I felt very fortunate and confident having Mark Williamson and team on our side during stressful custody situation. He is always extremely fair, reasonable, and easy to talk with while giving us sound advice and expert council. I have zero doubt that hiring Mark was the right decision. If you are here reading reviews looking for a great family law attorney that you can trust, be comfortable with, and get you results...you can stop now and talk to Mark Williamson.
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Posted by Jeff | November 8, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Most Trustworthy Attorney
I initially hired Mark in 2016 to help with a suit from my ex (son’s Mother). He was understanding, helpful and made smart recommendations to help ensure that any money spent was worthwhile and made sense. Fast forward to 2020 and I called him again to help with a second suit from my ex (son’s Mother). He has always put what’s best for us first, even if that means he earns less money. I have heard many horror stories of hiring attorneys who don’t respond, do what they promise, etc., (even dealt with one who couldn’t fill out paperwork with my name properly, then charged me to fix the paperwork they messed up). With Mark, you will not have to worry or even think about those details, he has you covered. I would absolutely recommend Mark.
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Posted by anonymous | November 7, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Best referral
I can't say enough about Mark and his team. From the very first meeting, they all allowed me to not only have a voice in my divorce, but worked feverently on my case that concluded with a satisfied settlement. Their no bs attitude and their investigative collegues gave me assurance when every thing else during the waiting period did not. I highly recommend Mark and his entire paralegal and support staff to anyone going through a difficult divorce.
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Posted by Isabel | March 7, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Best lawyer
Mark Williamson is the best lawyer, he always fights for what is right, he has helped me so much. As well as Marry Beth and staff.
Posted by Linda | March 3, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Divorce Attorney
They are very good. The are understandable, very compassion and handled my case very well.Will recommend for anyone.
Posted by Megan | March 3, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney
I have worked with Mr. Williamson as my attorney now for about 2 years and he was referred by family who had used his services as well. He is an excellent attorney, tells it how it is, and works to get a fair and just ruling as best that he can. I would recommend him to anyone looking for his services and if I ever need them again in the future, I would utilize his services again without question.
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Posted by anonymous | February 20, 2020
This review is from a person who hired this attorney.
| Hired Attorney
True professionals!
I hired Williamson Law firm to work on modifying international travel restriction on my original child custody agreement. My initial consultation with Mark was very insightful. He gave me all the information I could have wanted and didn't even know to ask. I hired him on the spot. His team kept me in the loop on everything they did. The whole process was quick and painless and their fees more than are fair. Hopefully I will never need their services ever again but I am sure glad I had them on my team this go around :)
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Posted by Kyle | February 6, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Highly recommended!
Mark and his staff have been a true blessing to me during a very diffcult time. There is absolutely no doubt that their top priority is whatever is in my best interest. They are kind, caring, responsive and assuring. They have had my back from day one. Look no further if you need a confident and competent divorce attorney.
Posted by Donald | December 3, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Best Lawyer bar none!
I vetted several Top rated Attorneys in the Dallas/Fort Worth area and choose Mr. Williamson to represent me. Every aspect of Mr. Williamson’s practice is on point. He always made sure I knew my options and where we stood throughout the process. His staff is very knowledgeable and friendly and I am grateful for all of their help. He definitely is the best at what he does!
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Posted by anonymous | August 16, 2019
This review is from a person who hired this attorney.
| Hired Attorney
You're in the right place
When seeking a lawyer to address your divorce / family law needs, one of your key requirements should focus on selecting a counselor who will help you achieve the best outcome for your situation. Enter Mark Rush Williamson. Mark is a knowledgeable, well-established law professional here in the Dallas area, and he knows how to smoothly navigate the ins and outs of Texas family law. Simply have a look at the professional endorsements on his profile – several of which were written by opposing counselors! – to understand how connected and respected Mark is. He is also a gentleman and a heck of a nice guy. As his client, I found that Mark and his team were passionate about balancing between what I desired and what I needed for my situation. On the rare occasion where it was necessary to do so, Mark wasn’t afraid to tell me what I needed to hear, always keeping the end game in focus. Together, we had a dynamic working relationship throughout the legal process. With me having “Type-A” personality tendencies, there were times along the way when I became impatient, and I wished Mark and his team were more communicative. However, I attribute this to the combination of my personal communication style and Mark’s respect for controlling costs on my case, wherever possible. I had to learn to have patience throughout this process, particularly since “the other side” drug their feet every step of the way. In the end, Mark and his team stayed the course, and together we achieved a positive, equitable outcome. As someone who has now been through the unpleasant legal process of divorce, I encourage you to hire Mark and get him on your side. You can be confident that he and his team will have your back every step of the way as you seek your best possible outcome.
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Posted by Cara | May 20, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Family custody
I could write a book on how amazing Mark and his team are! They genuinely care about each client and their needs, and they handle each case with such integrity, character and grace. They are quick to respond, get things done in a timely manner and are complete processionals in and out of the courtroom. There is no other attorney that I would recommend! They helped me out in such a huge way, and have been the biggest blessing to my daughter and I. I cannot thank you for taking care of us, I will always be eternally grateful
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Posted by Melvin Rockwell jr | April 17, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Valued customer
Help with my divorce helped me through the process made sure that any contingency were covered and always had my best interest in mind thanks for all you guys do great team.
Posted by anonymous | April 17, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Simply the Best!
Mark was our attorney on a recent child custody situation; hired when our previous attorney failed to adequately help or communicate with us. Mark and his team were amazing -- professional, kind, considerate, respectful and got the job done! We were kept informed and consulted when needed. Mark was always prompt to court appointments and represented us in a manner that made us very, very thankful he was in our corner. Mark and his team are simply the best.
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Posted by Devedra | April 16, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Family Court Case
I first came in contact with Mr. Williamson through a friend who used him for her case. I had my consultation and saw his passion for helping me get the things done I had attempted to do on my own. I really feel he has been a blessing to me and my daughter. I will always recommend Mark to any and all who are looking for a attorney. He was able to complete my child’s name change, some changes to visitation, and also accountability for payments. Mark Is remarkable and I am glad I made the decision for him to be my attorney.
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Posted by anonymous | October 9, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Highly recommend Mark Williamson
Mark Williamson did a great job on handling my divorce in a respectful manner for both parties but was ready to use a stronger approach had it been needed. Mark was great in communicating all steps along the way and made this stressful life event a little easier process.
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Cost

Rates
  • Hourly Rates $ 350-550 per hour
  • Retainer Always
Payment methods
Cash, Check, Credit Card

Resume

AVVO RATING 10.0 (Superb)

Work Experience

  • Partner
  • Sullivan, Klocke & Williamson, P.C.
  • 2021 - Present
  • President and founder
  • Williamson Law, PLLC
  • 2001 - 2021

Education

  • University Of Texas
  • JD - Juris Doctor
  • 1985
  • Baylor University
  • BBA
  • 1982

Legal Cases

  • Brennan v. Cedeno 14th Court of Appeals-Fort Worth
  • Overruled in client's favor, remanded back to trial court.
  • In Re A.B.A.T.W Dallas 5th Court of Appeals
  • Appeal court ruled in client favor.

Associations

  • Collin County Bar Association
  • 2000 - Present
  • Dallas Bar Association, Family Law Section
  • 1997 - Present
  • State Bar of Texas, Family Law Section
  • 1997 - Present

Languages Spoken

  • English

Awards

  • AV Preeminent 5.0 out of 5 Peer Review Rated
  • Martindale-Hubbell
  • 2022
  • Texas Super Lawyer
  • Texas Monthly Magazine
  • 2021
  • Top Attorney
  • Texas Monthly Magazine
  • 2021

Attorney endorsements

Received (24)
Given (37)
Family Attorney | Dec 12
Relationship: Opposing Counsel on matter
"Mark is a solid professional lawyer. He works hard for his clients and knows the law,"
Family Attorney | Feb 14
Relationship: Fellow lawyer in community
"I have known Mr. Williamson for many years, and have had cases with him, and against him. He is poised, firm, intelligent, an excellent communicator and exceptional in the courtroom. I highly endorse this attorney."
Family Attorney | Sep 15
Relationship: Friend
"I endorse Mark Rush Williamson. I have know him for over 35 years. He is a man of character and a skilled advocate for his clients. Hire him before you spouse does."
Family Attorney | Sep 17
Relationship: Other
"I endorse this lawyer. Top Gun. Top Guy."
Divorce and separation Attorney | Dec 16
Relationship: Opposing Counsel on matter
"I highly endorse Mark Williams. We have had a case opposite each other, and he worked hard to resolve tough issues. Mark is a great negotiator who puts his client’s interests first."
Divorce and separation Attorney | Jun 24
Relationship: Opposing Counsel on matter
"Mark is an extremely intelligent, creative and aggressive advocate. He will not back down from a tough case, and he is at home in the courtroom. I endorse this lawyer."
Family Attorney | May 23
Relationship: Fellow lawyer in community
"I endorse Mark. He is a highly skilled attorney that is well respected in the legal community."
Family Attorney | Jan 06
Relationship: Opposing Counsel on matter
"I endorse this lawyer. I have drawn several cases as opposing counsel to Mark over the last few years and have found him to be both an excellent advocate for his client and a man of integrity."
Family Attorney | May 22
Relationship: Opposing Counsel on matter
"I had a case against Mr. Williamson in 2011 and in all my dealings with Mark I found him to be an extremely intelligent, tough, and well prepared attorney that definitely knew his stuff. I'll always remember that despite the years of experience he had on me, he treated me with respect throughout the process. Although tough in the courtroom, his demeanor with fellow lawyers behind the scenes was exactly how it should be. Mark knew when to be diplomatic and also when to flex his legal muscles. I learned a lot going up against Mr. Williamson, and even modeled some of my own practice methods after his. In addition, his office staff was always unbelievably courteous and helpful, even though we were adversaries. I highly recommend Mark Williamson to anyone seeking a family law attorney, and to be honest I'd probably choose him if I ever needed a family attorney myself."
Family Attorney | Apr 16
Relationship: Opposing Counsel on matter
"I've tried a case against Mark and found him to be a tenacious (distressingly so, for me as opposing counsel) and skilled advocate for his client. Anyone looking for an attorney to represent them in a family law matter would do well to have Mark in their corner."
Divorce and separation Attorney | Apr 09
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Divorce and separation Attorney | Mar 09
Relationship: Opposing Counsel on matter
"Having practiced divorce law for over 16 years, I have had the opportunity to tangle with some of the best lawyers in the DFW area as well as some of the worst. I certainly am not itching to be divorced from my own wife, but if it were to happen, Mark would be on the short list of lawyers to whom I would turn to handle my own affairs."
Divorce and separation Attorney | Mar 08
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mark is a phenomenal lawyer with an exceptional reputation in the Dallas/Ft. Worth metroplex. He goes above and beyond to help his clients."
Family Attorney | Nov 17
Relationship: Fellow lawyer in community
"Mark is a tough litigator and a knowledgeable attorney."
Child custody Attorney | Jan 13
Relationship: Opposing Counsel on matter
"Mark is a tremendous lawyer. I know from experience. He whipped me pretty good, but I learned from the experience, and I am a better lawyer for it. To be the best you must learn from the best."
Family Attorney | Jul 30
Relationship: Opposing Counsel on matter
"I endorse this lawyer. I have known Mark for many years and had the opportunity of working with him as opposing counsel on a case. Mark is always professional and his knowledge of Family law is exceptional. I would recommend Mark to anyone who has a Family Law need."
Family Attorney | Dec 08
Relationship: Fellow lawyer in community
"Mark Williamson is an exceptional attorney. He is a fine litigator and he also knows when a case needs to be settled. I recommend Mark without reservation."
Family Attorney | Dec 08
Relationship: Opposing Counsel on matter
"Mark Williamson is an excellent lawyer and is respected by his peers. He handles every case with a personal touch that his client's seem to cherish. I have heard nothing but positive things about his relationships with clients and I know from personal experience that he is a skilled adversary. I recommend Mark to anyone with a family law matter."
Family Attorney | Aug 08
Relationship: Opposing Counsel on matter
"Mark is an excellent attorney. He has been on the other side of several cases and is tenacious is highly professional."
Family Attorney | May 27
Relationship: Fellow lawyer in community
"I enthusiastically endorse this lawyer's work. I have worked opposite Mr. Williamson in a high conflict family law case and found him to be trustworthy and very capable. He represents his client's well, has an excellent command of the law and is a good trial lawyer!"
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Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Divorce and separation
Child custody
Divorce and separation
Divorce and separation