Richard Sackville, 3rd Earl of Dorset (18 March 1589 – 28 March 1624) was the eldest surviving son of Robert Sackville, 2nd Earl of Dorset, by his first wife, Lady Margaret Howard, daughter of Thomas Howard, 4th Duke of Norfolk and Margaret Audley.

Born at Charterhouse, London, Sackville was styled Lord Buckhurst from 1608 until 1609, when he succeeded his father as Earl of Dorset and inherited the family home of Knole House.

[1] A rumour noted later by the antiquary John Aubrey had it that one of Richard Sackville's "concubines" was Venetia Stanley.

[4] At the time of their marriage, Lady Anne had been in a long-running legal contest over her inheritance rights; in 1617, the 3rd Earl signed away her claim on contested ancestral lands to James I, in return for a cash payment which the Earl used to pay off his gambling debts.

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