Henry Cavendish, Earl of Ogle

Henry Cavendish, Earl of Ogle (1659 – 1 November 1680), was the only son and heir of Henry Cavendish, 2nd Duke of Newcastle and his wife Frances Pierrepont, but died before his father at the age of 21; the Dukedom became extinct on his father's death, but was revived for Henry's brother-in-law: John Holles, Duke of Newcastle-upon-Tyne.

Henry, Earl of Ogle, is remembered mainly for his short-lived marriage to Lady Elizabeth Percy, daughter of the last Earl of Northumberland and the greatest heiress of her time. She was only twelve when they married and was widowed a year later; in view of her age it is unlikely that the marriage was consummated. Her second marriage to Thomas Thynne was a cause of great scandal when he was murdered by three men in Pall Mall, hired by her reputed lover Karl Johann von Königsmarck. She quickly remarried Charles Seymour, 6th Duke of Somerset: as the Duchess of Somerset she became notable for her influence over Queen Anne, and under the nickname "Carrots" was the subject of a violent attack by Jonathan Swift.