Mary K. “Katie” (Linnehan) Bosco, of Milton, passed away peacefully on Sunday, January 7, 2017. The beloved wife of Joseph M. Bosco, she was the devoted mother of Michael A. Bosco and his wife Erin of Canton and the late Nicholas J. Bosco, the cherished “Nana” of Henry and Zoe Bosco and Emma Bosco – St. Jean and sister of Fred Linnehan and his companion Elsa Christian of FL and Anne Leary and her husband Danny of Quincy. She is also survived by many loving nieces, nephews, cousins and friends. Mary was a retired employee of Harbor Medical Urgent Care in Weymouth, MA. A Funeral Mass will be celebrated at St. Agatha Church, Milton Thursday at 9 am. Visiting hours will be held at the Alfred D. Thomas Funeral Home, 326 Granite Ave., Milton, Wednesday 4 to 8 PM. Burial in Milton Cemetery.