Marilyn Cavanaugh, 85, of Port St. Lucie, passed away Thursday, March 12, 2015 at Ft. Pierce Health Care. Marilyn was born in Warrior Run, PA. She had been a resident of Port St. Lucie for the past forty three years coming from Plymouth, PA. She was preceded in death by her loving husband, Maurice Cavanaugh. Survivors include her sister, Kathleen Beatty of Port St. Lucie, FL, and one nephew.