Mohun was the second child of
Charles Mohun, 3rd Baron Mohun, and his wife Philippa Annesley, a daughter of
Arthur Annesley, 1st Earl of Anglesey. His father died shortly after his birth, following a duel, and left him the family
estate. The estate, however, was heavily in debt. Due to this Mohun received no education, and was forced to resort to
gambling in order to support his lavish lifestyle. Mohun joined the army shortly after his acquittal. There he served under
Charles Gerard, 2nd Earl of Macclesfield, the uncle of his former wife, and briefly served in
France. In 1697 the Lords again tried Mohun for the
murder of Richard Coote following a duel on
Leicester Square. Mohun was again acquitted, although his friend
Edward Rich, 6th Earl of Warwick was found guilty of
manslaughter. In 1712, two years after Mohun's Whig party had been heavily defeated in an election, the Duke of Hamilton gained the post of special envoy to
Paris. Also at this time, Mohun's legal dispute with Hamilton over his inheritance of the Macclesfield estate was going badly. Shortly before Hamilton's scheduled departure for France, Mohun challenged him to a duel which was fought on 15 November in
Hyde Park. Macartney fled and was charged, but acquitted by his peers on his return from France, and the conclusion was that Mohun had wounded Hamilton mortally before dying. == Legacy ==