CADOGAN, WILLIAM, 1ST EARL CADOGAN, eldest son of Henry Cadogan, Liscarton, co. Meath, barrister, and Bridget, dau. of Sir Hardress Waller, Kt. ; b. ; at school under Busby (Al. Dub. ); Trinity Coll. Dublin, adm. pens. 28 Mar 1686/7, aged 15; said to have fought in William III’s army at the battle of the Boyne, Jul 1690; Capt. , 19th Foot, 4 Mar 1694; Maj. , 6th Dragoons, 1 Aug 1698; Brevet Col. of Foot, 1 Jun 1701; Quarter Master General of British Army in Flanders and Germany under Duke of Marlborough, 1 Jul 1701 - 22 Dec 1712; Col. , 6th Horse (“Cadogan’s Horse”), 2 Mar 1703 - 20 Dec 1712; Brig. -Gen. , 25 Aug 1704; Maj. -Gen. , 1 Jan 1707; Lieut. -Gen. , 1 Jan 1709 - Dec 1712; present at battles of Blenheim, Ramillies, Oudenarde and Malplaquet; dangerously wounded at siege of Mons, but returned to take part in siege of Douai and capture of Bouchain; served as QMG under Duke of Ormonde in campaign of 1712, but subsequently retired to Netherlands, and, sharing Marlborough’s unpopularity, was ejected from all his offices and employments in Dec 1712; MP Woodstock 1705 - 16 Mar 1714, 24 Mar 1714- 21 Jun 1716; Special Envoy to Hanover and Vienna, 1706; Lieut. of the Tower of London, 2 Jan 1707 - 11 Jan 1712; Envoy Extraordinary and Plenipotentiary to The Hague and Brussels, Nov 1707 - Jan 1711; reinstated as Lieut. -Gen. Aug 1714 on accession of George I; Master of the Robes from 1 Aug 1714 (formal date of appointment 12 Oct 1714); Col. , 2nd Foot Guards 15 Oct 1714 – Jun 1722; Envoy Extraordinary and Minister Plenipotentiary to The Hague, 22 Oct 1714 - Nov 1721 (with gaps); Governor of the Isle of Wight, 16 Sep 1715; served in Scotland during Jacobite rebellion of 1715-6, initially as second-in-command to Duke of Argyll, in chief command 15 Feb - 12 May 1716; KT 29 Jun 1716; cr. Baron Cadogan, 30 Jun 1716; signed treaty of defensive alliance between Great Britain, France and Holland as Ambassador Extraordinary at The Hague, 15 Sep 1716; PC 17 Mar 1717; General of all the Foot, 12 Jul 1717; cr. Earl Cadogan 7 Apr 1718; Commander-in-Chief of the Forces and Col. 1st Foot Guards from 18 Jun 1722; Master-Gen. of the Ordnance, 30 Jun 1722 – Jun 1725; a Lord Justice of Great Britain during George I’s absence in Hannover 3 Jun - 28 Dec 1723; as a diplomatist Cadogan was somewhat rough and rash, but as a soldier he must be ranked as one of the ablest staff officers the British Army has produced; m. 1704 [check] Margaretha Cecilia, dau. of Jan Munter, Heer van Zanen en Raaphorst, Counsellor of the Court of Holland; d. 17 Jul 1726; buried in Duke of Ormonde’s vault in Henry VII’s Chapel, Westminster Abbey. DNB.
