Frank “Dennie” Thornburg, 71 of Belle Vernon, died Wednesday, March 4, 2020 at UPMC Presbyterian. He was born March 2, 1949 in Washington, the son of the late George and Ruth Carroll Thornburg. Dennie was a graduate of Washington High School and a veteran of the U. S. Navy. After his service in the Navy, he completed schooling to become an electrician and worked as a commercial air and heating salesman. After he retired, he worked at Tower Golf and Beau Street Regency part time. Dennie enjoyed fishing with his good friend, Kevin Lowther, Boating, listening to Blues music and spending time with his three grandchildren. He was an avid Steelers fan and he boxed in high school and the Navy. Dennie was a member of the American Legion Edwin Scott Linton Post #175. Above everything, he was a father, who dedicated his life to his children. They are eternally grateful for his love, acceptance, and generosity. Surviving are a son, Ian Thornburg of Pittsburgh; two daughters, Kayla (Brian Knisely) Thornburg of Washington and Dia (Josh King) Thornburg of McDonald; a brother George Gary (Peggy) Thornburg of South Franklin; three grandchildren, Aria Thornburg, Addalynn Knisely and Lillian Knisely; sister-in-law, Joyce Thornburg; nieces and nephews, Leslie, Darcy, Todd, Kelly, Codi, Kory, Bailey and Wyatt; good friends, Panama & Lisa Welch; many great nieces and nephews. Deceased is a brother and best friend, David Thornburg. A Memorial Gathering will be held Monday, March 9, 2020 from 6 to 8 p.m. at William G. Neal Funeral Homes Ltd., 925 Allison Ave, Washington.