The Conservative and Unionist Party in Scotland was called the Unionist Party before it formally merged with the Conservative Party of England and Wales in 1965, henceforth adopting the Conservative brand. Prior to the merger, the party was often known simply as "the Unionists". "Unionist" in the names of these parties is rooted in the merger of the Conservative and Liberal Unionist parties in 1912. The union referred to therein is the 1800 Act of Union (between Great Britain and Ireland), not the Acts of Union 1707 (between England and Scotland).