Skip to main content

About me

Ms. O'Neil founded the firm based on her desire to provide clients with high-quality representation in a personalized atmosphere. She has over 18 years of experience representing men, women, and children related to family law matters such as divorce, child custody, and complex property division. Additionally, she advocates for gay and lesbian parents to preserve their relationship with their children. Described by one lawyer as "a lethal combination of sweet-and-salty", Ms. O'Neil exudes genuine compassion for her client's difficulties, yet she can be relentless when in pursuit of a client's goals.

Ms. O'Neil became a certified family law specialist by the Texas Board of Legal Specialization in 1997 and has maintained her certification since that time. Representing clients in litigation before the trial court is an important part of her practice. In addition, family law appellate matters are a niche of Ms. O'Neil's practice. Lawyers frequently consult with Ms. O'Neil on their litigation cases about specialized legal issues requiring particularized attention both at the trial court and appellate levels.

Having both extensive trial experience as well as appellate experience enables Ms. O'Neil to see the trial court battle in a broader view and to clean up the mess on appeal with added perspective.

In 2008, Ms. O'Neil was asked to participate in co-authoring a book entitled All About Texas Law and Kids, published by Texas Lawyer Press in the Fall of 2009. She is currently working on her second book dealing with the basics of Texas divorce law.

The State Bar of Texas and other providers of continuing education for attorneys frequently enlist Ms. O'Neil to provide instruction to attorneys on topics of her expertise in the family law arena. She has, further, been honored by her peers with an "A-V" peer review rating by Martindale-Hubbell Legal Directories for the highest quality legal ability and ethical standards, as well as selection as a Barrister in the Annette Steward Inns of Court, an organization devoted to the professionalism of the practice of law.

In addition to her service to the legal profession, Ms. O'Neil actively serves the community. Altrusa International Inc. of Dallas, Texas, a professional women's community service organization, selected Ms. O'Neil to serve as president from 2005 to 2007. During her term, the group received the Nina Fay Calhoun Award for International Relations for their work with Refugee Services. She also founded the project D.U.N.K. - Dallas Uniforms for Needy Children - providing donated uniform clothing to underprivileged children in the Dallas Independent School District.

Ms. O'Neil shares with many of her clients the joys of having a blended family, having married her husband John in 2006, who has a 10-year old son.


Languages spoken: English, Spanish

Photos and videos

181879 1276092505

181879 1276092433

181879 1261520259

181879 1256241682

Practice areas


  1. Divorce & Separation: 50%
    24 years, 1 thousand cases
  2. Family: 25%
    24 years, 1 thousand cases
  3. Marriage & Prenuptials: 10%
    24 years, 100 cases
  4. Child Custody: 10%
    24 years, 1 thousand cases
  5. Appeals: 5%
    24 years, 100 cases



Hourly ($500/hour)

Payment types:

Cash, Check, Credit card

Attorney endorsements

22 total 

Are you an attorney? Endorse this lawyer

  • Hunter Biederman

    Michelle provides thie finest Family Law representation for the DFW Area. I endorse her work.


    Hunter Biederman DUI & DWI Attorney
    Relationship: Fellow lawyer in community

  • No photo

    I highly endorse Michelle May O'Niel. We have had a case opposite each other, and she worked hard to resolve tough issues. Michelle is a great negotiator who puts her client’s interests first.


    Gerald Tadlock Family Attorney
    Relationship: Opposing Counsel on matter

Contact info

O'Neil Wysocki P.C.

5323 Spring Valley Road
Suite 150
Dallas, TX, 75254


TXEligible To Practice In Texas 199210/19/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top 10 Law Blog June 26, 2015LexBlog Network2015
Top 50 Women Lawyers in TexasTexas Super Lawyers2014
Top 100 Lawyers in DFWTexas Super Lawyers2014
Top 100 Lawyers in TexasTexas Super Lawyers2014
Texas Super LawyersTexas Super Lawyers2014
Best in Law Blogs November 23, 2009LexBlog2009
Best in Law Blogs November 18, 2009LexBlog2009
Best In Law Blogs November 11, 2009LexBlog2009
MemberWho's Who in AmericaN/A
MemberWho's Who In American LawN/A
A-V Peer Review RatingMartindale-HubbellN/A
Work experience
TitleCompany nameDuration
Senior ShareholderO'Neil Wysocki, P.C.2015 - Present
ShareholderGodwin Lewis PC2014 - Present
President and Founding PartnerO'Neil & Attorneys2009 - 2014
President and Founding PartnerThe May Firm2003 - 2009
Senior Associate AttorneyMcCurley, Kinser, McCurley, Nelson & Downing, LLP2000 - 2003
Association namePosition nameDuration
State Bar of Texas, Family Law SectionCommittee Member, Membership Committee2009 - Present
Collin County Bar FoundationCLE Course Director2008 - 2008
Collin County Bar FoundationCLE Course Chair2006 - 2006
Altrusa International Inc of DallasPresident2005 - 2007
Annette Stewart American Inn of CourtMember2003 - Present
Texas Academy of Family Law SpecialistsMember1997 - Present
Texas Board of Legal SpecializationMember1997 - Present
State Bar of TexasMember1991 - Present
Dallas Bar Association, Family Law SectionMemberN/A
Collin County Bar AssociationMemberN/A
Dallas Bar Association, Appellate Law SectionMemberN/A
State Bar of Texas, Appellate SectionMemberN/A
State Bar of Texas, Family Law SectionMemberN/A
Dallas Bar AssociationMemberN/A
Collin County Bar Association, Family Law SectionMemberN/A
Texas Bar FoundationFellowN/A
Legal cases
Case nameOutcome
Eberstein v. HunterAttorney’s fee award set aside on appeal.
In the Interest of M.K.S.-V.lesbian non-parent right to trial on custody
In re S.C.S.Writ of attachment for posession of child
See all legal cases 
Publication nameTitleDate
Texas Lawyer MagazineToddler Tug of War: Mother and Couple at Odds in Parental Rights Termination Case2010
Dallas VoiceVowels Case Returned To Trial Court For Hearing2010
All About Texas Law and KidsAll About Texas Law and Kids2009
Dallas Morning NewsMore Texans Paying Child Supprt with Unemployment Checks as Economy Suffers2009
Dallas VoiceLesbian Moms in Custody Fight2009
Dallas VoiceAppeals Court Sends Lesbian Custody Case To Trial2009
Divorce MagazineHow do we decide whether sole custody or joint custody is best for our family?2007
Texas Bar Assocation Family Law Section ReportDo You Know the New Law on AJ Appeals?2007
Texas Bar Assocation Family Law Section ReportFamily Law Appeals Distinguished2007
Divorce MagazineI'm not happy with the outcome of my divorce. Can I appeal it? If so, how?2007
Divorce MagazineIf I move out of the family home, do I lose my rights to it?2007
Divorce MagazineShould I ask for a divorce based on fault or no-fault grounds?2006
Divorce MagazineWhat happens if I disagree with the outcome of my case?2006
Divorce MagazineI want to change the division of my property in my divorce.2005
Divorce MagazineIn divorce litigation, can you change the judge's decision?2005
Divorce MagazineHow Does A joint Custody Agreement Usually Work?2004
Headnotes (Dallas Bar)Alimony/Maintenance Enforcement By Contempt2004
State Bar of Texas Appellate AdvocateFamily Law Appeals Distinguished2003
Today's Dallas Woman MagazineAdvice from a Divorce Lawyer: Whether or Not You Are Thinking About Getting a Divorce.2002
School nameMajorDegreeGraduated
Baylor University School of LawLawJD - Juris Doctor1991
Baylor UniversityBusiness/Pre-lawB.B.A.1989
Speaking engagements
Conference nameTitleDate
Ninth Annual Family Law on the Front Lines ConferenceMandamus and More.2009
Marriage Dissolution BootcampWriting the Perfect Country and Western Song: Successful Preparation and Trial of a Texas Temporary Orders Hearing2009
Collin County Bench Bar ConferenceInteresting Appellate Issues.2009
Advanced Family Law ConferenceWinning your case before you go to trial: Dispositive motions and procedures.2009