Acts of Union 1800 when repealed in 1962. Before these Acts, Ireland had been in personal union with England since 1541, when the Irish Parliament had passed the Crown of Ireland Act 1542, proclaiming King Henry VIII of England to be King of Ireland. Since the 12th century, the King of England had been technical overlord of the Lordship of Ireland, a papal possession. Both the Kingdoms of Ireland and England later came into personal union with that of Scotland upon the Union of the Crowns in 1603. In 1707, the Kingdom of England and the Kingdom of Scotland were united into a single
Union of England and Scotland Act 1603 Union of England and Scotland Act 1603 The Union of England and Scotland Act 1603 (1 Jac. I c.2), full title "An Act authorizing certain Commissioners of the realm of England", was an Act of Parliament of the Parliament of England enacted during the reign of King James I. It appointed a commission led by the Lord Chancellor, Lord Ellesmere, to meet and negotiate with a commission which would be appointed by the Parliament of Scotland. The aim of the discussions was to look into the possibility of arranging a formal political union between England and Scotland, going beyond the