Niskayuna - Douglas E. “Big D” Charlton, 76, of Niskayuna, passed away on Wednesday, March 8, 2023 at his home in Ocala, Florida. Doug was born in Schenectady and graduated from Linton High School in 1964. He was employed as a Machinist with General Electric for 38 years retiring in 2004. Douglas also served as a union representative and was on the board of local #301. He was a member of the Iroquois Rod and Gun Club for many years, loved all sports, especially hockey. Doug was a devoted grandfather and attended all his grandchildren’s sporting events over the years. He also enjoyed nature, history and watching Jeopardy. Doug was predeceased by his beloved wife Leonora A. Charlton, who died in 2005, his parents, John and Edwina Kozlowski Charlton and his brother, Gary Charlton. He is survived by his children, Richard Charlton of Arizona, Michael (Michele) Charlton of Ballston Lake and Jennifer Charlton of Niskayuna, his sister-in-law Lucille Puglio and his grandchildren, Maxwell Charlton, Johnny Charlton and Erin Charlton and his companion of many years, Deborah Kurowski. Calling hours will be held on Monday, March 20,from 6 – 8 pm at the DeMarco-Stone Funeral Home, 1605 Helderberg Ave. Funeral services will begin at the funeral home on Tuesday, March 21, at 9 am. Burial will be at St’s Cyril & Method Cemetery. In lieu of flowers, the family requests memorial donations be made in his memory to the Animal Protective Foundation, 53 Maple Ave. Schenectady, NY 12302.