Cadogan, William Cadogan, 1st Earl, 1675-1726, British general and diplomat. He is remembered chiefly as the faithful friend and brilliant subordinate of the 1st duke of Marlborough. In addition to serving (1702-11) as the latter's quartermaster general, he was the able commander of a dragoon regiment known as Cadogan's Horse and played a distinguished part in Marlborough's many victories in the War of the Spanish Succession. When the duke fell from power in 1711, Cadogan went into exile in the Netherlands. He conducted dealings with Hanover for the English Whigs, and after the Hanoverian George I ascended (1714) the British throne, he received new commands and honors. Cadogan helped to suppress the Jacobite uprising of 1715, was created earl in 1718, and was made commander in chief of the army after Marlborough's death in 1722. He also had high diplomatic duties in the resettlements among Great Britain, France, the Netherlands, the Holy Roman Empire, and Spain in the years 1714-20.

William Cadogan, 1st Earl Cadogan KT, PC (1675–1726) was a noted military officer in the army of John Churchill, 1st Duke of Marlborough during the War of the Spanish Succession. He commanded the prestigious 1st Foot Guards for some time.

Early life

The eldest son of barrister Henry Cadogan, he was educated at Westminster School and Trinity College, Dublin, and joined the army in 1690. He served in Ireland at the sieges of Cork and Kinsale where he first served with Marlborough, then an Earl, and by 1701 was a Major of the Inniskilling Dragoons.

War of the Spanish Succession

In 1701, Cadogan was appointed quartermaster general to Marlborough on the latter's appointment to command the English troops in the Low Countries. During the campaign of 1704, he was one of the few entrusted with the truth of Marlborough's march from the Spanish Netherlands to the Danube and played a major role in the organisation of the march. He fought at the battles of the Schellenberg and Blenheim. He commanded the army's scouting part which located the French army on the morning of Ramillies, and acted as a senior messenger for Marlborough during the battle, recalling Orkney's British infantry from their diversionary attack on the French right flank to assault the French centre around Ramillies itself. At Oudenarde he commanded the allied advance guard, which established crossings over the River Scheldt, and later commanded the forces which broke through the French left towards the end of the battle. He fought at Malplaquet, and was wounded in the neck at the siege of Mons, but quickly recovered. During the breaking of the lines of Ne Plus Ultra, he again commanded the allied advance guard, and established a bridgehead across the lines prior to Marlborough's arrival with the main army. After Marlborough's dismissal from his posts at the end of 1711 Cadogan remained with the army, but refused to return with it when Britain withdrew from war in 1712, going into voluntary exile with the Duke.

Later life

During Marlborough's voluntary exile during the last years of Queen Anne's reign, Cadogan accompanied him, and often acted as a go-between to maintain Marlborough's links with Britain. When the Hanoverian King George I succeeded in 1714, Cadogan received military favours from the Crown, and in 1715 he replaced the Duke of Argyll in command of the army putting down a Jacobite rising.

On 21 June 1716, he was made Baron Cadogan of Reading, having recently purchased Caversham Park, Oxfordshire (now Berkshire) near that town. He was also made a Knight of the Thistle and, the following year, a member of the Privy Council. (He was a Whig MP for Woodstock from 1705 to 1716.) On 8 May 1718 George I made him 1st Baron Cadogan, of Oakley, co. Buckingham, Viscount Caversham, of Caversham, co. Oxford and Earl Cadogan. In later years he also served as Master of the Robes (1714–1726), Governor of the Isle of Wight (1715–1726) and Master-General of the Ordnance (1722–1725). However, the Opposition's staunch hostility towards him meant that he had lost any political influence several years before his death on 17 July 1726.

He married Margaret Cecilia Munter, by whom he had two daughters: Sarah, who married Charles Lennox, 2nd Duke of Richmond, and Margaret, who married Charles John Bentinck, fourth son of William Bentinck, 1st Earl of Portland.

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