Mary Ann Sullivan was born August 25, 1936 in Joliet, IL to Frank and Mary (nee Laurich) Bravato. She passed away on April 27, 2022 at Waverly Inn Memory Care Community in Arlington Heights, IL. Mary Ann dedicated her career as an Orthopedic Nurse for both Lutheran General and Holy Family Hospitals, spanning over 4 decades. Her greatest joy was spending time with her family. Mary Ann is survived by her children Mary (Tim) Cummings, Sue (David) Roberts and Mark (Cindy) Sullivan; her grandchildren Amanda, Brian, Hailey, and Ashley; and by her sister Frances Bravato. Mary Ann is preceded in death by her husband Andrew John Sullivan Jr.; her sister Connie (Joe) Lazzaro and by her parents. A Celebration of Life service will be held Sunday, May 15, 2022 from 3 PM to 6 PM at The Tap House Grill in Palatine, IL. Funeral Information and condolences can be given at www.GlueckertFH.com or (847) 253-0168. Funeral and interment services will be private.