born: Halifax, Nova Scotia, 30 December 1816
died: Ottawa, Ontario, 3 May 1888
representing: Nova Scotia
position: Pro-Confederation

William Alexander Henry first entered politics in 1840 after being elected into to the Nova Scotia Assembly. He spent many years in the Liberal party, eventually climbing his way to the provincial cabinet in 1852. In 1857, however, Henry had a split with the party and changed his political allegiance from the Liberals to the Conservative party.

As a supporter of Confederation he urged Nova Scotia to join in the Dominion. Henry attended the meetings in Charlottetown as Nova Scotia's attorney general and had a role in drafting the British North America Act. In 1867 he was defeated in the Federal election but was rewarded with a position in the Supreme Court.