Laudabiliter in the context of "Anglo-Norman invasion of Ireland"

The Lordship of Ireland (Irish: Tiarnas na hÉireann), sometimes referred to retrospectively as Anglo-Norman Ireland, was the part of Ireland ruled by the King of England (styled as "Lord of Ireland") and controlled by loyal Anglo-Norman Lords between 1177 and 1542. The lordship was created following the Anglo-Norman invasion of Ireland in 1169–1171. It was a papal fief, granted to the Plantagenet kings of England by the Holy See, via Laudabiliter. As the Lord of Ireland was also the King of England, he was represented locally by a governor, variously known as the Justiciar, Lieutenant, Lord Lieutenant or Lord Deputy.

The kings of England claimed lordship over the whole island, but in reality the king's rule only ever extended to parts of the island. The rest of the island – referred to subsequently as Gaelic Ireland – remained under the control of various Gaelic Irish kingdoms or chiefdoms, who were often at war with the Anglo-Normans.

The title of Supreme Head of the Church of England was created in 1531 for King Henry VIII when he first began to separate the Church of England from the authority of the Holy See and allegiance to the papacy, then represented by Pope Clement VII. The Act of Supremacy of 1534 confirmed the King's status as having supremacy over the church and required the nobility to swear an oath recognising Henry's supremacy. By 1536, Henry had broken with Rome, seized assets of the Catholic Church in England and Wales and declared the Church of England as the established church with himself as its head. Pope Paul III excommunicated Henry in 1538 over his divorce from Catherine of Aragon.

Similarly, in Ireland, the Parliament of Ireland passed the Act of Supremacy (Ireland) 1537, establishing Henry as Supreme Head of the Church of Ireland. Again Henry seized assets of the Catholic Church in Ireland and declared the Church of Ireland as the established church with himself as its head. He made himself King of Ireland in 1541, which reinforced his status (previous English kings had held the title of Lord of Ireland, and the island was considered a papal fief based on an 1155 papal bull).