History of the formation of the United Kingdom Kingdom of England (which included Wales and controlled Ireland) and the Kingdom of Scotland. The once independent Principality of Wales fell under the control of English monarchs from the Statute of Rhuddlan in 1284. The Union of Crowns in 1603, the accidental consequence of a royal marriage one hundred years earlier, united the kingdoms in a personal union, though full political union in the form of the Kingdom of Great Britain required a Treaty of Union in 1706 and Acts of Union in 1707 (to ratify the Treaty). The Act of Union 1800 united the Kingdom of Great Britain with
Acts of Union 1800 kingdom: the Kingdom of Great Britain. Upon that union, each House of the Parliament of Ireland passed a congratulatory address to Queen Anne, praying that, "May God put it in your royal heart to add greater strength and lustre to your crown, by a still more comprehensive Union". The Irish parliament at that time was subject to a number of restrictions that placed it subservient to the Parliament of England (and following the union of England and Scotland, the Parliament of Great Britain), however Ireland gained effective legislative independence from Great Britain through the Constitution of 1782. By this time