William J. “Billy” Dempsey on May 21, 2017. Aged 52 years. Devoted husband of 22 years of Katherine (née Turansky). Devoted son of Patricia and the late William. Loving brother of Thomas (Dawn), Christine (John) Salva, and the late Patricia. Cherished uncle of Ryan, Samantha, Jack, Emma and Kate. Also survived by his dog, Winter. Billy was a retired Suffolk County Police Officer and a member of the Suffolk County Emerald Society. He will best be remembered for his favorite pastimes of boating, travelling, and laughing with friends.