David Mainse (August 13, 1936 – September 25, 2017) was a Canadian televangelist, broadcast executive and producer, and an evangelical Christian leader. He was the founder of Crossroads Christian Communications and host of the long-running Christian talk show 100 Huntley Street. Early life Mainse was born on August 13, 1936 in Campbell's Bay, Quebec. He was raised in a rural area near Ottawa, Ontario, then continued his education at Sudbury Secondary in Sudbury. Mainse was highly influenced by his father, Roy Lake Mainse (1896–1972), who worked as a missionary in Egypt, and then as a Holiness Movement Church pastor in Ontario and Quebec. Mainse determined to go into ministry while still a teenager. He studied theology at Eastern Pentecostal Bible College (now Master's College and Seminary) in Peterborough, Ontario and was ordained. He pastored Pentecostal Assemblies of Canada churches in Brighton, Deep River and Hamilton. He met and married Norma-Jean Rutledge in 1958. Television career He began his communications ministry in 1962 with a 15-minute program following the late night news on affiliate CHOV in Pembroke, Ontario, while he pastored in Deep River. He later began a television program called Crossroads. The program gradually expanded to stations across Canada, but with minimal penetration into the American heartland. In 1975, Mainse left the pastorate to focus full-time on television and evangelism projects. He began the ministry known as Crossroads Christian Communications in the early seventies with Circle Square, a children's telecast that has been carried in over 50 countries and continues to be shown in some. Mainse later made the fictional ranch a reality as the summer camp, Circle Square Ranch. At its peak there were 11 Circle Square Ranches across Canada. In 1976, Mainse began a project to telecast daily. He took the initiative and obtained a $100,000 a year, 20-year lease on a building at 100 Huntley Street in downtown Toronto that was suitable for conversion into a television studio. The lead program of this new production company took the studio's address as its name. On June 15, 1977, the interview/talk show 100 Huntley Street (based on The 700 Club in the United States) was launched. This TV program featured more than 14,000 guests such as Billy Graham and Charlton Heston, and in 2015 was reported as one of three Canadian TV programs attracting over one million viewers each week. Crossroads produced a short-lived program for teenagers, Inside Track,