Thomas Greenshields Henderson was educated at Lower Canada College and Bishop's College School before attending McGill University where he obtained his B.A. in 1927, winning the Prince of Wales Gold Medal for mental and moral philosophy. The following year, 1928, he obtained his M.A. After five years of commercial life, he went to Harvard, obtained his doctorate in philosophy, and became an instructor in the Department of Philosophy. He was appointed Chair of Philosophy at the University of British Columbia in 1941, which he held until he decided to continue his association with the 1st Battalion of the Black Watch (Royal Highland Regiment) of Canada during the Second World War.

William George Henderson was born on June 25, 1819, in Harbridge, Hampshire, England.

He was a clergyman, educator, and historian. He was educated at Wadham and Magdalen Colleges, Oxford (B.A., 1840; M.A., 1843; D.C.L., 1853; D.D., 1882). He was a Fellow of Magdalen College, Oxford (1846-1852) and a Tutor at Durham University. He was a Master of Hatfield College, Durham (1851-1852), Headmaster of Victoria College, Jersey, Channel Islands, and Leeds Grammar School. He was ordained in 1859. He served as Dean of Carlisle from 1884 to his death in 1905. Henderson was also a scholar who edited various liturgical works.

He married Jane Melville Dalyell. Their son was George Francis Robert Henderson (1854–1903), a British soldier and military author. He died on September 24, 1905.