Mary L. Perunko, 91 of Harmony Twp., died Wednesday March 4, 2026, Heritage Valley Sewickley. Born October 31, 1934, Sewickley, she was the daughter of the late John and Mary Coggens Perunko. She was a retired nurse in the nursery at the former Rochester Hospital. She was a member of St Luke the Evangelist/ Good Samaritan Church and was a volunteer at the former Good Samaritan School. Surviving is her brother, Edward Perunko, Harmony Twp., one niece, Kristina Perunko, one nephew, David Perunko, both of California. In addition to her parents, she was preceded in death by a brother, John Perunko, of Los Angeles. A Mass of Christian Burial will be held on Monday March 9, 2026, at 10:30am, Good Samaritan Church. Interment will follow Good Samaritan Cemetery. BOHN-MATICH FUNERAL & CREMATION SERVICES, INC., 1099 Maplewood Ave., Ambridge, is in charge of arrangements.