 In 1814 he entered commercial life, and in 1820 formed a partnership with Allen Newell in North Brookfield, but three years later withdrew to become the agent of the Methuen Manufacturing Company.In 1825 he formed the firm of Carleton and Walker, of Boston, with Charles G. Carleton, but in 1827 he went into business independently.He was a delegate to the 1836 Democratic National Convention.