Sir Nicholas Arnold (1507–1580) was an English courtier and politician, who held office as lord justice of Ireland. Life Nicholas was born at Churcham in Gloucestershire, the eldest surviving son of John Arnold and his wife Isabel Hawkins. His father was lord of the manors of Highnam and Over in Gloucestershire. In 1530, he entered the service of Thomas Cromwell and assisted him in the Dissolution of the Monasteries. He was by 1526 a gentleman pensioner of Henry VIII and in 1538 one of the King's Bodyguard. Soldier and politician In 1546, he was sent to take charge of the English fort of Boulogneberg near Boulogne in France. In May 1549 the fort was attacked by the French but they were completely defeated; Arnold himself was wounded in the attack. After a second attack the following August, Arnold realised defence was hopeless and, dismantling the fort, withdrew to Boulogne. He was knighted some time during the reign of Edward VI (c.1553) and spent time travelling in Italy. He was the Member of Parliament for Gloucestershire in 1545–47, 1553 and 1555. He was later MP for Gloucester in the Parliaments of 1559 and 1563 to 1567 and in 1571 MP for Cricklade. From 1558 to 1580, he was also the Custos Rotulorum of Gloucestershire, and, in 1558 and 1559, the High Sheriff of Gloucestershire. He was appointed one of the Council of the Marches of Wales in June 1574. Lord justice of Ireland He was Lord Justice, 1564–65. He had already seen service in Ireland as member of a commission of inquiry into the conduct of the previous viceroy, Thomas Radcliffe, 3rd Earl of Sussex, which dragged on for two years but ended inconclusively. Arnold was appointed lord justice on 24 May 1564. Arnold concentrated on the defence of the Pale. He did not prevent the feud between the Desmonds and the Ormonds that led to the Battle of Affane early in 1565. As Lord Justice, he was regarded as a failure, being described as "quarrelsome, arbitrary and credulous", and within a year he was replaced by Sir Henry Sidney. The most serious charge against him was that he had done nothing to curb the growing power of Shane O'Neill, Prince of Ulster, thus making inevitable the clash between O'Neill and the Crown which broke out after his departure. He unwisely quarrelled with the youthful, but increasingly powerful, Adam Loftus, then