Thomas J. "Tom" Clark, Sr., 82 of Groton, formerly of Locke passed away on March 10, 2022 at Guthrie Cortland Medical Center, with his loving family by his side. He was born on April 15, 1939 in Cortland, New York a son of the late Robert and Laura Davis Clark. Thomas served his country with the United States Navy from 1963-1965. He most recently worked at Pinkerton Security as a Security Guard. Thomas previously worked at Smith-Corona Inc. He enjoyed crossword puzzles and spending time with his grandchildren and great grandchildren. Thomas is survived by his son, Thomas "Tom" (Jody) Clark, daughter Michelle (Terry Vestal) Clark, sister in law, Judy Bishop, nine grandchildren, seven great grandchildren and several nieces and nephews. Thomas is predeceased by his loving wife Mary Clark. Per Thomas's wishes there will be no calling hours or service. Wright-Beard Funeral Home, Inc., is assisting the family with arrangements.