アイルランド卿
In 1172, Pope Alexander III further encouraged Henry to advance the integration of the Irish Church with Rome. Henry was authorised to impose a tithe of one penny per hearth as an annual contribution. This church levy, called Peter's Pence, is extant in Ireland as a voluntary donation. In turn, Henry accepted the title of Lord of Ireland which Henry conferred on his younger son, John Lackland, in 1185. This defined the Irish state as the Lordship of Ireland. When Henry's successor died unexpectedly in 1199, John inherited the crown of England and retained the Lordship of Ireland.