Dr. Callahan, an Annapolis dentist, was founder and pastor of Church of Christ in Eastport. Born in Galax, Virginia, he was raised in the coal mining town where he worked his summers in the kitchens of the local hotels. He graduated from Gary District High School in Gary, W. Virginia and Meharry Medical College in Nashville. He earned a master of divinity degree from Wesley Theological Seminary. The congregation began in 1967 as a prayer group at his dental office located at 20 Dean Street in Annapolis. In the 1970’s, a former A&P Grocery was the home of the church. It has been enlarged many times over to accommodate the growing independent nondenominational church. He also served 2 years as a pharmacist mate in the Navy Hospital Corps.