William T. Hennessey
Chair, Probate, Trust & Guardianship Litigation, Shareholder
Practice Group(s): Private Wealth Services, Probate, Trust & Guardianship Litigation
Mr. Hennessey is Chairman of the Probate and Trust Litigation Committee of the Real Property, Probate, and Trust Law Section (RPPTL) of the Florida Bar and is a member of RPPTL’s Executive Council. He is a Fellow of the American College of Trust and Estate Counsel (ACTEC) and a frequent author and lecturer on probate and trust litigation topics.
- Practice Areas[ - ]
- Complex and Disputed Estate and Trust Administration
- Probate, Trust, and Guardianship Litigation
- Will and Trust Contests and Defense of Fiduciaries and Beneficiaries
- Will and Trust Construction
- Trust Modification, Revocation, and Termination
- Surcharge and Removal Litigation
- Competency Proceedings
- Appointment of Guardian
- Education[ - ]
- University of Florida, J.D., highest honors, 1996
- Senior Editor, Florida Law Review
- Teaching assistant, legal research and writing
- University of Florida, B.S., highest honors, 1993
- University of Florida, J.D., highest honors, 1996
- Honors[ - ]
- South Florida Legal Guide, “Up & Comer,” 2011
- The Best Lawyers in America, Trusts & Estates, 2008-12
- AV Rated as independently determined by Martindale-Hubbell
- Florida Super Lawyer
- Fellow of the American College of Trust and Estate Counsel
- Seminars & Presentations[ - ]
- “Fiduciary Litigation in an Era of Rapidly Changing Technology: Will You Be the Last Samurai?,” ACTEC 2010
- “Till Death Due Us Part: Challenging the Validity of Marriage in Probate Proceedings,” Your 2007 Trust & Estate Symposium (Florida Bar), Florida Fellows Meeting, ACTEC 2008
- “Conflicts Quagmire I: Payment of Trustee Attorneys’ Fees When Defending Breach of Duty Claims,” 2008 Legislative and Case Law Update (Florida Bar)
- “Tangled Web-Attorney-Client and Fiduciary Conflicts,” Probate Team Florida Legal Education Association, 2008
- “Avoiding the Grinch: Drafting, Enforcing, and Challenging Charaitable Pledges,” Planned Giving Council/East Coast Estate Planning Council, 2009
- “Conflicts Quagmire II: Recognizing and Addressing Conflicts for Your Fiduciary Clients,” Your 2006 Trust & Estate Symposium, (Florida Bar)
- “Your 2008 Trust and Estate Symposium-Litigation Under the New Trust Code,” Program Chair (Florida Bar)
- “Uncivil War: Navigating the Minefields of Probate and Trust Litigation,” Wills, Trusts and Estates Certification Review Course
- “Probate Trust and Litigation: When the “Ties That Bind” Unwind,” Wills, Trusts and Estates Certification Review Course (Florida Bar)
- “What’s Good for the Goose . . . Elective Share and Other Spousal Rights,” Wills, Trusts and Estates Certification Review Course (Florida Bar)
- Publications[ - ]
- “Intestate Succession,” Litigation Under Florida Probate Code (3d, 4th, 5th, 6th, and 7th ed.)
- “Will Construction,” Litigation Under Florida Probate Code, (3d, 4th, 5th, 6th, and 7th ed.)
- “Elective Share,” Practice Under Florida Probate Code, (3d, 4th and 5th ed.)
- Bar Admissions[ - ]
- The Florida Bar
- Probate and Trust Litigation Committee, Former Chair
- Executive Council of RPPTL Section
- Probate Rules Committee, member
- Probate Law and Procedure Committee, member
- Trust Law Committee, member
- The Florida Bar
- Civic & Community Service[ - ]
Community Foundation of Palm Beach and Martin Counties, Executive Committee of Professional Advisors



