D. Ewen Cameron was born in Scotland and received his medical degree from the University of Glasgow in 1924. He began his career as resident surgeon at Glasgow Infirmary, but in 1929 came to Canada to work in the Brandon Mental Hospital. In 1936, he became Director of Research at Worcester State Hospital in Massachussetts, and in 1938 was appointed Professor of Neurology and Psychiatry at Albany State Medical School. It was at Albany that Cameron conducted his most important research on sensory deprivation, memory and aging. In 1943, Cameron entered on a new phase of his career when he was appointed Professor of Psychiatry at McGill and director of the newly-created Allan Memorial Institute. On the clinical side, he established in-patient and out-patient services, and a day-hospital programme. He developed laboratories for psychiatric research, and promoted advances in psychiatric training through undergraduate curricula and teaching hospital programmes. Cameron's high reputation in the psychiatric field is attested by his appointment in 1945 to the American panel to examine Rudolf Hess at the Nuremberg trials. After retiring from the Allan in 1964, he returned to Albany as Research Professor at the Albany Medical School and Director of the Laboratory for Research in Psychiatry and Aging at the Veterans' Administration Hospital.

Duncan Cameron was born in 1764 in Glen Moriston, Scotland, and died in 1848 in Williamstown, Upper Canada. He was the son of Alexander Cameron and Margaret McDonell. Cameron moved to Quebec in 1785 and entered the fur trade as a clerk for Alexander Shaw and Gabriel Cotte in the Lake Nipigon region. Between 1807 and 1812, Cameron married an unknown Ojibwa woman connected to the loon clan in the Nipigon area (with probability that the marriage was “a la façon du pays”) sometime between 1807 and 1812, with whom he had a family. In 1820, he married Margaret McLeod, daughter of Captain McLeod of Hamen. They had one daughter and three sons, and one of the sons named Sir Roderick William became active in the shipping trade to Australia. Cameron Street in Winnipeg is named after Duncan Cameron.

Hugh Cameron was born in Breadalbane, Scotland in 1786. He was a mill wright and farmer who lived in the townships of Hinchinbrooke and Huntington, Quebec.

James Cameron was a Scottish immigrant to Montreal. A tavern keeper and grocer in Montreal from 1842-1859, he owned the Glasgow Inn tavern on Saint-Laurent Boulevard. He is listed in the 1842 Lower Canada Census as having 8 children. His sons include James junior, John, and Archie.

John Alexander Hugh Cameron was born on April 22, 1878, in Glencoe, Inverness, Nova Scotia. He was barrister and author, M.A., LLD, and K.C. In about 1910, he moved to Montreal, Quebec. He died on November 30, 1928, in Mabou, Nova Scotia.