 Mac Murchada's considerable authority in Dublin at this point is evidenced by several ecclesiastical grants, foundations, and appointments.Furthermore, two major military operations undertaken by Dublin's forces in 1164 and 1165 may have been conducted under Mac Murchada's authority.The latter campaign, recorded by the "Annals of Ulster", and the thirteenth- and fourteenth-century texts "Brut y Tywysogyon" and "Brenhinedd y Saesson", concerned naval manoeuvres off Wales, in the service of Henry II, King of England.