Rt. Reverend McAllister was born February 16, 1923, in San Antonio, Texas. He attended the University of Texas, joined the Merchant Marines at the outbreak of World War II, and was a rancher before graduating from the Virginia Theological Seminary. He was elected Bishop of the Diocese of Oklahoma April 15, 1977, and served until January 6, 1989.

Reverend Herbert C. Banks served in the Episcopal Missionary District of Oklahoma at St. Philip's Church, Muskogee and St. Thomas Church, Tulsa from 1927 through 1933. Reverend Banks served in World War I before becoming a deacon and graduating from Bishop Payne Divinity School and Dubose Memorial Church Training School. He was recommended to Bishop Thurston and served both churches for most of his tenure in the district. Banks left Oklahoma and was an Episcopal clergyman at St. Cyprian's, New York City.

Reverend Cecil H. Cowan was a priest within the Episcopal Diocese of Oklahoma, 1948-1956. Reverend Cowan grew up in Boley, Oklahoma and was the first Black Oklahoman sponsored and ordained in the diocese. Before entering priesthood, Cecil served in the European theater of World War II with the U.S. Army Anti-Artillery, Barrage Balloon Unit. He was a licensed Methodist chaplain at a boys school in Boley before entering Holy Orders at the age of 29. Under Bishop Casady's suggestion, he attended The Divinity School of Philadelphia. After graduation, he turned down an offer to be the Assistant Chaplain at Tuskegee Institute to work in the west. Reverend Cowan was ordained at St. Thomas Episcopal Church, Tulsa by Bishop Casady, December 11, 1948. He was immediately appointed vicar at St. Philip's Episcopal Church, Muskogee and St. Thomas Episcopal Church, Tulsa. Reverend Cowan resided in Tulsa while serving both missions. His wife, Blanche, was a social worker in Tulsa and in 1954 was accepted in the Doctoral program at the University of Pennsylvania. Reverend Cowan served two more years in Oklahoma before moving to Pennsylvania to be with his wife.

Reverend Gustave H. Caution, Sr. was The Church of the Redeemer's Episcopal priest from 1938 to 1942. He was a successful vicar leading North Carolina's first Episcopal mission church to parish status before arriving in Oklahoma. He came in 1938 to The Church of the Redeemer in Oklahoma City after the Episcopal District became a Diocese. Bishop Casady hired Reverend Caution with the intent to have The Church of the Redeemer move forward from mission to parish status. In addition to leading Redeemer, he also organized and led the 1940 Diocese's Second Annual Conference of Negro Churchmen at St. Philip's Episcopal Church, Muskogee. Unfortunately, Reverend Caution and his wife divorced in 1942 which under the church's canons, caused Bishop Casady to dismiss him from serving as a priest. Leaving the church, he served overseas in World War II, suffering extreme burns which left deep scars across his chest. When discharged from the Army, he served at several churches throughout the South, finally returning to his original church of St. Matthew's in Savannah, Georgia. He retired in 1968 and became an amateur ceramicist.