Mary T. Tiso, longtime resident of Greenwich, CT, died on November 12, 2024. Mary was born November 20, 1930 in Mount Vernon, NY to Daniel and Mary Reilly Maloney. Mary was a real estate professional holding a Broker and Appraising license. Mary will be remembered for her devotion to family and community, volunteering at Greenwich Hospital and membership at Innis Arden. She is survived by her sister Kathleen McClure, a daughter, Megan Byrne and son-in-law Tom, four grandchildren, Joseph (Kristi), Daniel (Mariah), Michael (Kaitlyn), Kristina Oberst (Scott), and seven great grandchildren Caitlin, Addison, Austin, Mackenzie, Jamie, Cecilia and Teresa. Mary was predeceased by her husband Joseph, and brother Daniel. Friends are invited to a Memorial Mass at St. Clement of Rome Church, 535 Fairfield Ave, Stamford CT at 10 am Friday November 29. In lieu of flowers, memorial contributions may be made to Sound Beach Volunteer Fire Department, Inc., 207 Sound Beach Avenue, Old Greenwich, CT.