Mary Ruth was born and raised in Southern California. While attending Biola University, she traveled with a group of students to River Valley Ranch in Maryland, where she met Tom Bisset. They married in 1964. She finished her education at Towson University with a major in Music Education and taught at Pleasant Plains Elementary for fifteen years. She spent ten years at Valley Presbyterian as organist/choir director in the 1970’s and returned as the organist in 1995. She now coordinates the music for the traditional service. She and Tom have two children, Jon Bisset and Christina Blackman, as well as four grandchildren: Anna, Aidan, Amelia and Evelyn.