English: Coat of arms of George Augustus Frederick FitzClarence, 1st Earl of Munster (1794-1842), eldest illegitimate son of King William IV of the United Kingdom and his long-time mistress Dorothea Jordan. Arms: royal arms of King William IV (without the escutcheon of the Arch Treasurer of the Holy Roman Empire and without the Crown of Hanover) debruised by a baton sinister azure charged with three anchors or