Wikipedia
Ireland King of Arms was the title of an officer of arms to the King of England and Lord of Ireland from 1392 until the accession of Henry VII as King of England in 1485. A king of arms is the highest of the three levels of officers of arms, and usually enjoys heraldic jurisdiction over a geographical area. Despite the name Ireland King of Arms did not appear to exercise heraldic authority in Ireland, and indeed the connection with Ireland seems rather tenuous. The office may have been created preparatory to a subsequently aborted military expedition to Ireland. The last holder of the office, Walter Bellinger, did exercise the heraldic prerogative of a king of arms to grant armorial bearings, however two of his grants were annulled or regranted by other kings of arms as they felt he encroached on their provinces. In 1552, 70 years after the last Ireland King of Arms, the office of Ulster King of Arms was created. The holders of this office exercised control over the heraldic affairs of Ireland until 1943, when the office was merged with that of Norroy King of Arms forming the present office of Norroy and Ulster King of Arms.