James O'Hara, 2nd Baron Tyrawley

Field Marshal James O'Hara, 2nd Baron Tyrawley and 1st Baron Kilmaine, PC (1682 – 14 July 1774) was a British army officer. After serving as a junior officer in Spain and the Low Countries during the War of the Spanish Succession, he went on to become British ambassador to Lisbon establishing a close relationship with King John V there. He undertook a tour as British ambassador to Saint Petersburg before becoming Governor of Gibraltar where he set about improving the fortifications. He was briefly commander of British troops in Portugal during the Seven Years' War but was replaced within a few months. During his military career, he was colonel of eight different regiments.

Military career

Born the son of Charles O'Hara, 1st Baron Tyrawley, and Frances O'Hara (née Rouse), James O'Hara was commissioned as a lieutenant in the Royal Fusiliers on 15 March 1703. He was promoted to captain on 24 March 1705.

O'Hara fought at the Siege of Barcelona in April 1706 and was wounded at the Battle of Almansa in April 1707 during the War of the Spanish Succession. He succeeded his father as 2nd Baron Tyrawley in June 1724. establishing a close relationship with King John V there. and to major-general on 17 July 1739, he also became colonel of the 5th Regiment of Horse in August 1739. he declined an American command later that year. he became colonel of the 2nd Troop Horse Grenadier Guards later that month and was appointed British ambassador to Saint Petersburg in November 1743. He retired from the Saint Petersburg post in February 1745.

Lord Tyrawley became colonel of the 3rd Troop of Horse Guards in April 1745 and colonel of the Lord Tyrawley's Regiment in December 1746 before becoming Governor of Minorca in 1747. He went on to become colonel of the 14th Regiment of Dragoons in July 1749, colonel of the 3rd (King's Own) Regiment of Dragoons in July 1752 and colonel of the Coldstream Guards in April 1755. Tyrawley went on to be Governor of Portsmouth in 1759. Lord Tyrawley and Kilmaine returned to Lisbon as British ambassador and commander of British troops in February 1762 for the duration of the Seven Years' War but was replaced by General John Burgoyne in July 1762 and returned to England in protest. he moved to Milbourne House in Barnes in 1770. He died at Twickenham on 14 July 1774 and was buried in the chapel of the Royal Hospital Chelsea.

Family In November 1724, Lord Tyrawley and Kilmaine married Mary Stewart, daughter of The 2nd Viscount Mountjoy. but this is likely to have been naval Lieutenant William Henry King O'Hara (d. 1789).