John Siveright was a fur trader and later became Chief Factor of the Hudson's Bay Company.
Born 2 December 1779 in Drumdelgy, Cairnie, Scotland, he was the son of John Siveright I and Jannet Glass.
), he was cited by the Hudson's Bay Company as part of a conspiracy by the NWC to destroy the Red River Colony.
He was at Fort Gibraltar when Duncan Cameron was arrested and was charged as an accessory in the murder of Governor Robert Semple a short time later.
John married a Metis woman named Louise Roussin.