Mary C. Deneen


Attorney Mary C. Deneen joined the law firm of O’Malley, Deneen, Leary, Messina & Oswecki in October of 2020. She received her B.A. in Psychology from Bates College in 2016, and she graduated cum laude with her J.D. from Western New England University School of Law in 2020. Mary was admitted to the Connecticut Bar in 2020 and the Massachusetts Bar in 2021.

Mary practices in a variety of areas, including residential and commercial real estate, probate, estate planning, wills and trusts, and personal injury. While in law school, she was a member of the Western New England Law Review, where her published Note received the “Outstanding Note Award” in 2019 and the “Benjamin D. Novak Award” in 2020. Mary previously interned for a personal injury law firm, the U.S. Attorney’s Office, and Bacon Wilson, P.C.

Mary currently resides in Windsor, Connecticut, and she is a member of the Connecticut Bar Association, Massachusetts Bar Association, Hartford County Bar Association, and Hampden County Bar Association. Mary is also Judge of the Greater Windsor Probate District, which serves the towns of East Windsor, South Windsor and Windsor.