Born in Nashville, Tenn., Ms. Bischoff was the daughter of Thomas and Helen (Murphy) Oldring. She was employed as a nurse aide at Sunrest Manor Nursing Home in Port Jefferson.
Survivors include her mother; her husband, Thomas; two daughters, Mary Bischoff-Moore of Wading River and Debbie Zarzana of Rocky Point; two sisters, Mary Sullivan and Darlene Oldring; three brothers, William Oldring of Setauket, Thomas Oldring and Francis Oldring; and three grandchildren.
Family will receive visitors Saturday, Dec. 26, noon to 12:30 p.m. at Rocky Point Funeral Home, followed by a 1 p.m. funeral service at Washington Memorial Park in Mount Sinai, where interment will follow.