Career
Born near Taree, New South Wales, he received a primary education before becoming a shopkeeper and grazier at Taree. In 1906, he was elected to the Australian House of Representatives as a Protectionist, defeating Henry Lee of the Anti-Socialist Party for the seat of Cowper. He was defeated in 1919 by future Prime Minister Earle Page, of the Farmers and Settlers Association, who joined the Country Party when it was formed in 1920.
Thomson retired from politics and died in 1934.