Christa Covington Craven, formerly of Honolulu and daughter of Steve and Donna Craven of Honolulu, and Brenda Lynn Murphy, formerly of Washington, D.C., and daughter of Joe and Rosalie Murphy of Staunton, Va., celebrated a commitment ceremony yesterday at Queen Emma's Summer Palace. Christa is an assistant professor of anthropology and women's studies at The College of Wooster. Brenda is a registered nurse. The couple live in Wooster, Ohio.