The kingdoms of England and Scotland, both in existence from the 9th century (with England incorporating Wales in the 16th century), were separate states until 1707. However, they had come into a personal union in 1603, when James VI of Scotland became king of England under the name of James I. This Union of the Crowns under the House of Stuart meant that the whole of the island of Great Britain was now ruled by a single monarch, who by virtue of holding the English crown also ruled over the Kingdom of Ireland. Each of the three kingdoms maintained its own parliament and laws. Various smaller islands were in the king's domain, including the Isle of Man and the Channel Islands.