Tercentenary of the coronation of William and Mary
Event From 11/4/1689 To 11/4/1989
King William and Queen Mary reigned jointly from 1689 until Mary died in 1694, after which William ruled alone until his death in 1702. They were first cousins and had married in 1677. Mary was daughter of King James II. William invaded Britain in the Glorious (to the Protestants) Revolution of 1688. Jointly they made an acceptable solution to the problem of who should rule.