In 1815 he turned down a commission into the British regular army, joining the law firm of
William Warren Baldwin before starting his own lucrative law firm in
Cornwall, Ontario. In 1820, he was elected to the
Legislative Assembly of Upper Canada for
Stormont; he held that seat until 1834, shared for the previous four years with his old school friend
Philip VanKoughnet. He served as Speaker of the Legislative Assembly, 1831-1834. He was then elected to represent Cornwall in 1834 and served a second term as Speaker of the Assembly in the 1836 session. He was a leading Tory member and advocated the rights of the
Presbyterian Church to be equal to those of the
Church of England. Elected for the sixth time in 1836, this time again for Stormont, he soon thereafter is appointed to the
Legislative Council and to the King's Bench. ==Upper Canada Rebellion==