Overview
The Lennox sisters were four eighteenth-century British aristocrats, the daughters of Charles Lennox, 2nd Duke of Richmond (1701–1750) by his wife Lady Sarah Cadogan (1705–1751).
The four sisters were:
Caroline Fox, 1st Baroness Holland (1723–1774),
Emily FitzGerald, Duchess of Leinster (1731–1814),
Lady Louisa Conolly (1743–1821),
Lady Sarah Lennox (1745–1826)
They all married prominent men and attracted varying degrees of admiration or notoriety. A fifth sister died aged 19, and three others in childhood.
Ancestry
They were the daughters of Charles Lennox, 2nd Duke of Richmond, by his wife Sarah Cadogan (1705–1751), a daughter of General William Cadogan. Their paternal grandfather was an illegitimate son of King Charles II.
From Wikipedia (CC BY-SA 4.0).