Henrietta d'Auverquerque, Countess of Grantham

Henrietta was the youngest daughter of Thomas Butler, 6th Earl of Ossory, and a sister of James Butler, 2nd Duke of Ormonde, a well-known Jacobite nobleman. Her mother, Emilia, was a Dutch noblewoman; Henrietta was thus a first cousin of her husband, whose father was Emilia's brother. They were married on 12 January 1697 and had the following children:^[2]

• Henry (1697–1718), styled Viscount Boston
• Thomas (1700–1730), styled Viscount Boston, who died unmarried.
• Lady Frances de Nassau d'Auverquerque (died 1772), who married Captain (later Lieutenant-Colonel) William Elliot of Wells, and had one child who died in infancy
• Emilia Mary (c.1702–1712)
• Lady Henrietta de Nassau d'Auverquerque (1712–1747), who married William Clavering-Cowper, 2nd Earl Cowper, and was the mother of George Clavering-Cowper, 3rd Earl Cowper^[3]

From 1718 until her death in 1724, the countess was a Lady of the Bedchamber to Caroline of Ansbach, then Princess of Wales.^[4]

 This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Ossory, Thomas Butler, Earl of". Encyclopædia Britannica. Vol. 20 (11th ed.). Cambridge University Press. p. 354.