 In <unk> , the new pope , Alexander III , further encouraged Henry to advance the integration of the Irish Church with Rome . Henry was authorised to impose a <unk> of one <unk> per hearth as an annual contribution . This church levy , called Peter 's <unk> , 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 <unk> , in <unk> . This defined the Irish state as the Lordship of Ireland . When Henry 's successor died unexpectedly in <unk> , John inherited the crown of England and retained the Lordship of Ireland . 
