Marcella was born in Hollis, Oklahoma, on November 17, 1924, to William Leslie Campbell and Isla (Hightower) Campbell. She married Byron St. Clair in Albuquerque, New Mexico. He preceded her in death in 1995.
She was a member of University Church of Christ, Abilene, Texas, and the VFW Ladies Auxiliary.
Survivors include her children, Joan Diamond and husband, Steve, of West Jordan, Utah, Diana Loudermilk and husband, Jim, of Abilene, Jane Stone and husband, Steve, of Stephenville, Carol Sanders and husband, Gary, of Peachtree City, Georgia, and Robert St. Clair and wife, Beverly, of Lubbock; 15 grandchildren; 24 great-grandchildren; sister, Nan Warren and husband, Dave, of Amarillo; sisters-in-law, June Treat of Vernon and Mary Lou St. Clair of Houston; brothers-in-law, John St. Clair of El Paso and Ted St. Clair of Fort Worth; and several nieces and nephews and many friends. She was preceded in death by her sisters, Dorothy Edwards and Wanda Fenoglio, and her brothers, John F. Campbell and Dr. William R. Campbell.
The family would like to thank Dr. Jose Vega, M.D., and staff and Melinda Underwood, OTR/CLT, University Place Senior Living, Abilene, Texas, and the University Church of Christ for their loving kindness and care.
Memorials may be made to Christian Service Center, PO Box 2957, Abilene, TX 79604, or Foster’s Home for Children, PO Box 978, Stephenville, TX 76401.