Photo of Sean M. Leonard
Sean M. Leonard
Associate, Litigation Department
900 Elm Street
Manchester, NH 03101

Sean is an associate in McLane Middleton’s Family Law Practice Group. His practice involves representing clients in New Hampshire, Maine, and Massachusetts.

Before joining McLane Middleton, Sean was a partner in a Maine law firm. He focused on various family issues, including parental rights and responsibilities, divorce, termination of parental rights, and adoption.

Sean received his LL.M. from The George Washington University Law School. He earned his J.D. from Roger Williams University School of Law. While in law school, Sean was the Vice President of the Student Bar Association and received the Feinstein Institute of Public Service Award for his work with the Navy. Sean received his B.A. from Plymouth State University, where he was a member of the school’s boxing club.

In his free time, Sean spends most of his days with his wife and daughters. He is also an assistant head coach for a local high school football team.



  • New Hampshire
  • Maine
  • Massachusetts


  • New Hampshire Bar Association
  • Maine Bar Association
  • Massachusetts Bar Association
  • NH Association of Justice
  • DOVE Program
  • George Washington University Law School Alumni Association
  • Littleton High School Football Coach – Littleton, MA


  • Maine Supreme Judicial Court’s Katahdin Pro Bono Service Award, 2021 and 2023
  • Aroostook Achievers Award (35 Under 35), 2019