Marcia K. Davis, 78, passed away on Wednesday, June 6, 2018, at University Medical Center, Las Vegas. She was born in Hartford, Michigan to Thomas E. and Elenore Lyons. She is survived by her mother; her sister, Margaret (Gerrald) Farrington; and her brother, Thomas (Kathleen) Lyons. She worked as an Oncology Radiation Therapist for more than 40 years in Chicago, Florida, and Las Vegas. Visitation will begin at 10:00am on Tuesday, July 24, with Mass following at 11:00am, both at Christ the King Catholic Community, 4925 S. Torrey Pines Drive, Las Vegas. Burial will be private at Palm Mortuary, 7600 S. Eastern Ave.