The title of King of Ireland was created after Henry VIII had been excommunicated in 1538, so it was not recognised by European Catholic monarchs. Following the accession of the Catholic Mary I in 1553 and her marriage to Philip II of Spain, in 1554, Pope Paul IV issued the papal bull "Ilius" in 1555, recognising them as Queen and King of Ireland together with her heirs and successors.
the title of king of ireland was created after henry viii had been excommunicated in 1538 so it was not recognised by european catholic monarchs following the accession of the catholic mary i in 1553 and her marriage to philip ii of spain in 1554 pope paul iv issued the papal bull "ilius" in 1555 recognising them as queen and king of ireland together with her heirs and successors