<Tr> <Th> See also </Th> <Td> Mac Coisteala and Castrum </Td> </Tr> <P> Costello is an Irish surname . </P> <P> The surname has been borne by a notable Irish family who claimed descent from Hostilo (or Hostilio) d'Angulo, an Anglo - Norman knight . Hostilio d'Angulo accompanied his father, Gilbert d'Angulo and brother Jocelyn d'Angulo to Ireland in 1172 under the leadership of the Earl of Pembroke Richard de Clare, known as Strongbow . The invasion was of course ultimately under the command of Anglo - Norman king, Henry ll . </P> <P> Pope Adrian IV, the first English pope, in one of his earliest acts, had already issued a Papal Bull in 1155, giving Henry authority to invade Ireland to bring the Irish Church into conformity with Roman practice . </P>

Where does the last name costello come from
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