Lord Charles Bentinck

Lord William Charles Augustus Cavendish-Bentinck (20 May 178028 April 1826), known as Lord Charles Bentinck, was a British soldier and politician.

Background Bentinck was the third son of British Prime Minister William Cavendish-Bentinck, 3rd Duke of Portland and Lady Dorothy (1750–1794), only daughter of Prime Minister William Cavendish, 4th Duke of Devonshire. William Bentinck, 4th Duke of Portland, and Lord William Bentinck were his older brothers.

He was born on 20 May 1780 at Burlington House, Piccadilly.

Political career Bentinck was returned to Parliament for Ashburton in 1806, a seat he held until 1812. He served under the Earl of Liverpool as Treasurer of the Household between 1812 and 1826.

Family Bentinck married, firstly, Georgiana Augusta Frederica Seymour (baptised Elliott) (1782 – 10 December 1813), daughter of the courtesan Grace Elliott on 21 September 1808; she was said to be a daughter of the Prince of Wales or of the 4th Earl of Cholmondeley, both men claiming her paternity. They had one daughter, who was raised after Georgiana's death by Lord Cholmondeley at Cholmondeley Castle: Georgiana Augusta Frederica Henrietta Cavendish Bentinck (21 August 1811 – 12 September 1883).

The marriage enabled Bentinck to become Treasurer of the Household in 1812, a position he held till death, despite his involvement in a notorious divorce suit and his subsequent remarriage.

In 1815, Bentinck eloped with his mistress, Anne, Lady Abdy, natural daughter of Richard Wellesley, 1st Marquess Wellesley by Hyacinthe-Gabrielle Roland. Lady Abdy was the wife of Bentinck's friend Sir William Abdy, 7th Baronet. Following the elopement, Lady Abdy was divorced by her husband. She and Bentinck were married on 23 July 1816. They had four children: Reverend Charles William Frederick Cavendish-Bentinck (8 November 181717 August 1865). He was a great-grandfather of Queen Elizabeth II through his daughter, who married Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne.

Bentinck collapsed and died suddenly at age 45 while undressing at his apartment in Park Lane, and was quickly discovered by his footman. Dr. Sir Henry Halford diagnosed a blood aneurysm as cause of death. His wife survived him by almost 50 years and died in March 1875.

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