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Lord Aylmer, Baron of Balrath, in the County of Meath, is a title in the Peerage of Ireland. It was created in 1718 for the naval commander Matthew Aylmer, the second son of Sir Christopher Aylmer, 1st Baronet, of Balrath (see below). Lord Aylmer's son, the second Baron, represented Rye in the House of Commons. The latter's grandson, the fourth Baron, succeeded his kinsman as seventh Baronet, of Balrath, in 1776. The titles remain united. He was succeeded in both titles by his son, the fifth Baron. He was a general in the Army and served as Governor General of Canada from 1830 to 1835. Lord Aylmer assumed by Royal licence the additional surname of Whitworth in 1825 on the death of his uncle Charles Whitworth, 1st Earl Whitworth. On his death the titles passed to his younger brother, the si