Alexander Munro was born in Montréal. Having left school at a young age in order to work in a drugstore, he nonetheless contrived to save enough money to attend McGill University, whence he graduated in medicine in 1878. After an internship in St. Thomas' Hospital, London, and post-doctoral work in Edinburgh and Paris, he returned to Montréal to establish a practice in which he continued until 1931.

Rev. Andrew Heber Munro was born in November 1827, in London, England.

He was a Baptist clergyman. He was educated at a mathematical and classical school in London and received a diploma from the British and Foreign School Society, the first normal school. He was sent to St. John, New Brunswick, to assist in establishing a normal school. He later became a teacher at the Wesleyan College, Sackville, N.B., where he transferred from a Congregational to a Baptist church. He then became a teacher at the Baptist Seminary in Frederickton where he also studied theology. He was ordained in Digby, N.S., in 1857 and remained a pastor there until 1859, followed by pastorships in Halifax, Yarmouth, and Liverpool, N.S. In 1869, he accepted a call to the Alexander St. Church, Toronto, Ontario, and in 1878, to the First Baptist Church in Montreal, Quebec. He served as secretary of the home mission of the Baptists of Canada, president of the Grande Ligne Mission, trustee of the Woodstock College and the Baptist Theological College, Toronto, and secretary of the Baptist Union of Canada.

In 1856, he married Phoebe Ann McGibbon (1827–). He died on November 30, 1896, in St. Thomas, Elgin County, Ontario.