The Law Office of William B. Doonan is a trusted and experienced family law firm serving clients in Keller, Texas and the surrounding areas. With a focus on family law, divorce, custody, elder law, and estate planning, Attorney William B. Doonan is dedicated to providing clients with the comprehensive legal representation they need during difficult times.

As a Board Certified Family Law Attorney, William B. Doonan has the expertise and knowledge to handle even the most complex family law matters. Whether you are going through a divorce, fighting for custody of your children, or planning for the future with estate planning, the Law Office of William B. Doonan is here to help.

Don’t navigate the legal process alone. Trust in the experience and dedication of Attorney William B. Doonan to guide you through your family law matters with compassion and skill. Contact the Law Office of William B. Doonan today at 432-570-9949 for Midland or 817-898-7242 for Keller/Ft. Worth to schedule a consultation.

Denis Martineau

3/20/2025

Mr Doonan has been amazing throughout my entire process. He is a great negotiator and managed to get everything that I needed in the final agreement so that my kids would be taken care of as they should. He is detail oriented and does not let go. His billing is fair and transparent. He is responsive. I always felt like my case was in good hands. I highly recommend him.

Black Label Tools

11/26/2024

There are a LOT of lawyers in Tarrant County, and it's normally not a pleasant experience when one is needed. I found myself needing representation during a contentious divorce. I did my research on William Doonan and was confident that I would receive great legal advice and representation. I highly recommend this family law firm to anyone looking for someone who is willing to invest in your case. The process is hazy, can be very confusing, but William and Jennifer do a great job explaining the process, the path, and the direction in which the finish line is located. Best of luck with you and your legal situation, but there is no rolling of the dice with William Doonan representing you.

Joshua Vancura

2/14/2024

Great team, William and Jennifer took very good care of us and the communication was great. Hopefully we won’t need a lawyer again but if we do, we’ll use William again.