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About me

I am an accomplished traveler, having lived places from South Dakota to Texas to Geneva, Switzerland, where I studied international law abroad. I graduated from the University of Texas in 1997 with a Bachelor of Arts in Philosophy. I attended Ohio Northern Law School on a Barrister scholarship, where I earned my Juris Doctorate in 2003, graduating with distinction, in the top ten percent of my class.

 I had a successful law school career, participating in Moot Court, becoming a Moot Court Associate Judge and the National Trial Competition Team Coach; eventually sitting as one of the esteemed Moot Court Board of Advocates. I earned almost every academic accolade awarded in law school, including being invited to become a member of the prestigious Order of Barristers and Willis Society. After earning the A+ Book Award in Criminal Law, I was asked to work as the Criminal Law teaching assistant to the incoming class. My grade point average was high enough to earn a position as an Associate Editor of the Ohio Northern Law Review, later graduating sixth in my class.

I have published two law articles, one on campaign finance reform laws, one on the First Amendment.

Prior to law school, I worked in accounting and business, developing a keen business acumen and knowledge of accounting that has been invaluable in my law career. In my free time, I enjoy running marathons and participating in triathlons, successfully completing a 70.3 Ironman in 2010 and 2011. I also enjoy spending time with my dog Misty, who graduated with top honors in Agility Training.  I recently adopted a pit bull mix, Sabine, who I discovered with friends with a broken leg on one of my training runs.

I am certified as an Amicus Attorney, a Guardian Ad Litem and an Attorney Ad Litem through the Children’s Friend in Court Program in Harris County. I am an active member of the Houston Bar Association, including its Family Law section. I help in my community through volunteering with the Houston Bar Association and various other organizations.


Photos and videos

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Practice areas


  1. Divorce & Separation: 40%
  2. Family: 40%
  3. Mediation: 20%



Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

10 total 

Are you an attorney? Endorse this lawyer

  • Matthew Casey Tyson

    Dawn was easy to work with as opposing counsel and is a strong advocate for her clients.


    Matthew Tyson Family Attorney
    Relationship: Opposing Counsel on matter

  • James Michael Evans

    I endorse this lawyer.


    James Evans Family Attorney
    Relationship: Opposing Counsel on matter

Contact info

11500 NW Freeway
Houston, TX, 77092


TXEligible To Practice In Texas 200310/19/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Nation's Top One PercentThe National Association of Distinguished Counsel2015
Work experience
TitleCompany nameDuration
Managing PartnerRenken Law Firm, PLLC2010 - Present
Managing PartnerVossler & Renken, PLLC2004 - 2010
Association namePosition nameDuration
Houston Bar Association, Family Law SectionMember2004 - Present
Publication nameTitleDate
29 Ohio N.U.L. Rev. 728Survey of Ohio Law: Ohio Supreme Court Decision: The State Ex Rel. Cincinnati Enquirer, Division2003
28 Ohio N.U.L. Rev. 495Federal Election Commission v. Colorado Republican Federal Campaign Committee2002
School nameMajorDegreeGraduated
Ohio Northern University - Claude W. Pettit College of LawLawJD - Juris Doctor2003
University of TexasN/ABA - Bachelor of Arts1997
Speaking engagements
Conference nameTitleDate
Default Divorces in Harris CountyDefault Divorces in Harris County2012