Lillian Carroll Cotter was born on July 10, 1928, in Boston, Massachusetts to James and Mary Agnes (Harney) Carroll. She passed away on December 13, 2021, in Oklahoma City. Beloved wife of the late Vincent P. Cotter for 63 years. Survived by sons Chuck Cotter (Suzy) and Paul Cotter (Cindy) and daughters Mary Cotter-Lalli (Steve), Jeanne Cotter and Kathy Lewallen (Chris). Lill cherished and was proud of each of her grandchildren Gary Lalli, Danielle Lewallen, Kimberly Cotter and Zac Lewallen. She treasured her many nieces and nephews. She was preceded in death by sisters Mary Frances Galvin, Eileen Pearson, and Theresa Murray. Lill was always quick to volunteer, she was the homeroom mom, girl scout cookie chair and regular church volunteer at Christ the King. The family requests any expressions of sympathy be made to the Vincent P. Cotter Scholarship Fund at Bishop McGuinness High School. Mass of Christian Burial will be 11:00 am, Friday December 17, 2021, at Resurrection Cemetery Chapel.