Graham McLennan received his degree in Dentistry from Sydney University. He is a dental surgeon and tutor at the University Dental School. He served as a captain in the Australian Army, received the Defense Medal and the National Serviceman's Medal. He is also a Director of The Atomic Bioology Institute. Graham and his wife Pam founded the National Alliance of Christian Leaders in 1973. Later they founded the Christian History Research Institute. He was on the executive of the Natiponal Gathering of 1988 and the Bicentennial of Christian Education in 1993. He also initiated the National Christian Heritage Sunday in 2012, and received the President's Medal from the President of Vanuatu for "services to the nation."