William C. Kirby

William C. Kirby

My approach is to hear my client’s goals—so I can provide concrete advise.
  • Divorce, Family Law
  • District of Columbia, Maryland, New Jersey, Pennsylvania
Claimed Lawyer ProfileQ&ASocial MediaResponsive Law

Within his family law practice, William Kirby values his client relationships above all else. That’s why he does everything in his power to find optimal solutions for their legal matters involving divorce, separation, custody, support, and more. Clients quickly see that William sincerely cares about them and that they can be confident in his advice.

William serves a wide range of clients including celebrities facing high-asset divorces. Bill is a passionate, appreciative, and motivated person who is dedicated to empowering individuals and families with the right information.

“When my clients come to see me, they are often experiencing a life-defining moment. How they handle the issue can impact the rest of their life and the lives of their family members,” Bill said. “My approach is to hear what my client’s goals are, so I can provide information and concrete advise about their situation. I know I have been successful when we create a path to the best outcome.”

William refined his strong skill set in litigation and negotiation as an attorney in the U. S. Marine Corps and then as a business litigator representing Fortune 500 companies. He employs his unique background and experience to improve the lives of his clients.

William earned his Bachelor of Science in Economics from the U.S. Naval Academy and was named an Arleigh Burke Academic Scholar. As a Marine Corps First Lieutenant, he was awarded the Marine Corps Funded Law Education Program scholarship. Bill went on to earn his law degree from Duke University School of Law. He is licensed to practice in New Jersey, Pennsylvania, U.S. District Court Eastern District of Pennsylvania, Maryland, and the District of Columbia.

Consultations can be made with William Kirby at any of the firm’s Philadelphia area offices.

Duke University School of Law
Duke University School of Law Logo
United States Naval Academy
B.S. (1998)
United States Naval Academy Logo
Professional Experience
William Kirby, Family Law Attorney
- Current
Ansa|Assuncao LLP
Military Attorney
U.S. Marine Corps Jagc
Speaking Engagements
Military Justice Appellate Updates and Protecting the Trial Record, Naval Justice School (Norfolk VA), Staff Judge Advocate Course
Military Justice Appellate Updates and Protecting the Trial Record, Naval Justice School (Norfolk VA), Staff Judge Advocate Course
Admitted to Practice
NJ Bar Association
Admitted to Practice
Pennslyvania Bar Association
Rated Excellent
Arliegh Burke Academic Scholar
United States Naval Academy
Professional Associations
New Jersey Bar Association
- Current
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Pennsylvania Bar Association, Family Law Section
- Current
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Maryland Bar Association
- Current
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Jurisdictions Admitted to Practice
District of Columbia
District of Columbia Bar
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Maryland Court of Appeals
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New Jersey
New Jersey Courts
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Disciplinary Board of the Supreme Court of Pennsylvania
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  • Credit Cards Accepted
Practice Areas
Collaborative Law, Contested Divorce, Military Divorce, Property Division, Same Sex Divorce, Spousal Support & Alimony, Uncontested Divorce
Family Law
Adoption, Child Custody, Child Support, Father's Rights, Guardianship & Conservatorship, Paternity, Prenups & Marital Agreements, Restraining Orders, Same Sex Family Law
  • English: Spoken, Written
Legal Answers
Q. My daughters mother has history of drugs and jail time. Do I have a chance for custody once I establish paternity?
A: The primary consideration by the court as to whether custody should be modified is whether it would be in the best interests of the child. The court decides this by reviewing a variety factors. If you decide you want to consider seeking custody, I suggest that you first meet with a family law attorney in your area to determine whether it's a good idea for you and your child.
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Websites & Blogs
William Kirby – Family Law Attorney
Contact & Map
Moorestown, NJ Office:
1221 North Church St
Suite #206
Moorestown, NJ 08057
Telephone: (856) 242-1452
Philadelphia Office
1700 Market Street
Suite 1005
Philadelphia, PA 19103
Telephone: (215) 515-9901