 The invasion was legitimised by the provisions of the Papal Bull Laudabiliter , issued by Adrian IV in 1155 . The bull encouraged Henry to take control in Ireland in order to oversee the financial and administrative reorganisation of the Irish Church and its integration into the Roman Church system . Some restructuring had already begun at the ecclesiastical level following the Synod of Kells in 1152 . There has been significant controversy regarding the authenticity of Laudabiliter , and there is no general agreement as to whether the bull was genuine or a forgery . 
 The invasion was legitimised by the provisions of the Papal Bull Laudabiliter , issued by Adrian IV in 1155 . The bull encouraged Henry to take control in Ireland in order to oversee the financial and administrative reorganisation of the Irish Church and its integration into the Roman Church system . Some restructuring <a href='been_done' title='1'><mark>had</mark></a> already begun at the ecclesiastical level following the Synod of Kells in 1152 . <a href='dey_it' title='2'><mark>There</mark></a> <a href='uninflect' title='3'><mark>has</mark></a> been significant controversy regarding the authenticity of Laudabiliter , and <a href='dey_it' title='4'><mark>there</mark></a> is no general agreement as to whether the bull was genuine or a forgery . 
The invasion was legitimised by the provisions of da Papal Bull Laudabiliter , issued by Adrian IV in 1155 . Tdabull encouraged Henry to take control in Ireland in order to oversee thdainancial and administrative reorganisation of the Irish Church and its integration into the Roman Church system . Some restructuring done already begun at the ecclesiastical level following the Synod of Kells in 1152 . It have been significant controversy regarding thedathenticity of Laudabiliter , and it ain't no general agreement as to whether the bull was genuine or a forgery .