As a
Loyalist, Powell went to
Quebec in 1779, entering private practice in
Montreal. In 1783, he went to
England to petition with other delegates against the
Quebec Act. His formal call to the English bar, delayed because of finances, was finally arranged in 1784 and, later that year, he returned to
Boston to attempt to recover his father's property which had been confiscated after the
American Revolution. Unsuccessful, he returned to Montreal in 1785. In 1789, he was appointed judge in the
Western District. He lived in
Detroit but the court sat at L'Assomption (
Windsor). In 1794, he was appointed to the Court of King's Bench for Upper Canada and moved to Newark (
Niagara-on-the-Lake). In 1808, he was appointed to the
Executive Council for the province. He settled at York (Toronto) and remained there during the American occupation during the
War of 1812. He opposed the suspension of
habeas corpus during the war. In 1814, he assisted Chief Justice
Thomas Scott by presiding over several of the trials known as the "
Bloody Assize" which were held at
Ancaster to prosecute those charged with
treason during the war. When Chief Justice
Thomas Scott was no longer able to chair the Executive Council in 1816, Powell took on that post, and also replaced him as Chief Justice later that same year. He upset the province's administration by rejecting many of the charges brought by
Lord Selkirk against those who had stirred up trouble for the
Red River Colony. In 1823, he refused to swear in
Alexander Wood as a commissioner for war claims arising from the War of 1812; Powell had originally opposed his appointment on moral grounds. Wood successfully sued him for damages. Although he opposed prosecuting
Robert Fleming Gourlay for attacks on the administration of the province, he found himself forced to banish Gourlay from the province for
sedition. In 1825, after he was rebuked by the Executive Council for exposing the administration to criticism, he resigned from that council; he was succeeded by
William Campbell as Chief Justice later that year. He died in Toronto in 1834. ==Family==