William and Mary were the only “joint sovereigns” in British history such that each had equal power, because usually the spouse of a monarch has no power and serves merely as a “consort”. The College of William and Mary in Virginia, founded by this king and queen in 1693, is the second oldest college in America. Mary died in 1694, and William then ruled alone until 1702, when he died. | William and Mary were the only “joint sovereigns” in British history such that each had equal power, because usually the spouse of a monarch has no power and serves merely as a “consort”. The College of William and Mary in Virginia, founded by this king and queen in 1693, is the second oldest college in America. Mary died in 1694, and William then ruled alone until 1702, when he died. |