Mathilda L. "Tillie" Pellegrino, age 91 of Plum, formerly of Penn Hills, on Wednesday, September 12, 2018. Beloved wife of the late Joseph Frank Pellegrino. Loving mother of Ronald (Kathy) Pellegrino, Robert (Linda) Pellegrino and the late Joseph and Larry Pellegrino. Grandmother of Lisa, Amy, Ryan, Jennifer, David and Kimberly. Also survived by many great-grandchildren, nieces and nephews. Friends received 2-4 and 6-8 p.m. Friday at MAURICE L. KNEE, LTD. FUNERAL HOME, 7663 Saltsburg Rd. (across from S & T Bank) Plum, PA 15239 and Saturday 12 p.m. at the funeral home until procession to Mt. Hope Cemetery for a 1 p.m. funeral service with interment following.