His mother came from the Chippewa tribe of Native Americans, but never married his father, James Finlay, a North West Company trader who had a family in Montreal.
[3] Finlay also played a key advance role in Thompson's discovery (from the East) of the Columbia River, scouting, storing provisions, and building canoes.
He later took over a defunct Hudson's Bay Company post, where botanist David Douglas recorded a visit in 1826, as well as a recipe for bread made from local lichens.
According to Nathaniel Jarvis Wyeth, who passed by the abandoned site in 1833, all the buildings had been burned for firewood but one, which was maintained out of respect for a dead clerk buried beneath it.
Meyers)[5] wrote in the early 20th century – "Jacques Finlay had a large family of sons and daughters, noted for their fine physique, many with light blue eyes.