John Andrew Macphail was born in Orwell, Prince Edward Island, and received his medical degree at McGill in 1891. He became McGill University's first Professor of the History of Medicine in 1907 and occupied the Chair for thirty years. During World War I, he was an officer in the 6th Field Ambulance with the Canadian Army Medical Corps. In 1918, his war work was rewarded by a knighthood.

John Macoun was born on April 17, 1831, in Magheralin, County Down, Northern Ireland.

He was a naturalist. In 1850, his family emigrated to Ontario, Canada, and began farming. In 1856, unsatisfied as a farmer, he became a school teacher and developed a deep interest in botany. His knowledge and dedication to fieldwork became sufficiently advanced and in 1868, he was offered the position of Professor of Botany and Geology at Albert College in Belleville. Between 1872 and 1881, he participated in five surveying expeditions to the Pacific and the Northwest for the proposed Canadian Pacific Railway. A major purpose of these expeditions was to determine the agricultural potential of various regions of the west. In 1879, the Geological Survey of Canada appointed him Explorer of the Northwest territories and moved his family to Ottawa where he served as Botanist to the Geological and Natural History Survey of Canada for the next 31 years. In 1887, he became its Assistant Director and in 1882, a charter member of the Royal Society of Canada. He was a prolific collector and cataloguer of Canadian flora and fauna. Over 100,000 samples from his collection of plants are housed in the National Herbarium of Canada, Canadian Museum of Nature, Ottawa.

In 1862, he married Ellen D. Terrill (1841–1922). He died on June 18, 1920, in Sidney, British Columbia.

Macorquodale was born in Winnipeg in 1913. He received a B.A. from McGill in 1934 followed by a B.C.L. in 1937. During his undergraduate years he was the President of The McGill Players' Club - 1932/33

John MacNider was born on July 29, 1822, in Montreal, Quebec.

In 1829, together with his brother William, John inherited the Seigneury of Métis from John MacNider (1760-1829), their father's uncle. Their father Adam Lymburner MacNider (1788-1840) administered it until his death. At some point, the Seigneury was divided into two equal parts, which came to be known as Grand-Métis and Métis-sur-Mer or Petit Métis; John taking the former. In 1851, he ran into financial difficulties and sold Grand-Métis to the merchant brothers Archibald and David Ferguson of Montreal. He moved to New Richmond, Wisconsin where he was a farmer. He also served as the Justice of the Peace.

In 1845, he married Jane Abigail Johnson (1824–1875) and in 1877, he remarried Frances Helen Southworth (1837–1912). He died on October 23, 1882, in New Richmond, St. Croix County, Wisconsin.