Katherine Villiers, Duchess of Buckingham

Her Grace
The Duchess of Buckingham
Her Grace The Duchess of Buckingham
	Katherine, Duchess of Buckingham, with her son George, 1628 (detail of larger portrait).
Personal details
Born	Lady Katherine Manners; 1603; Belvoir Castle, Leicestershire, England
Died	1649; Waterford, Ireland
Spouses	George Villiers, 1st Duke of Buckingham; Randal MacDonnell, 1st Marquess of Antrim;
Children	Mary Stewart, Duchess of Richmond; Charles Villiers, Earl of Coventry; George Villiers, 2nd Duke of Buckingham; Francis Villiers, 1629–1648;
Parents	Francis Manners, 6th Earl of Rutland; Frances Knyvet;

Katherine Villiers, Duchess of Buckingham, Marchioness of Antrim, 18th Baroness de Ros of Helmsley (née Lady Katherine Manners; died 1649) was an English aristocrat. The daughter and heiress of Francis Manners, 6th Earl of Rutland, she was known as the richest woman in Britain outside of the royal family. She married first George Villiers, 1st Duke of Buckingham, the favourite, and possibly lover, of King James I of England; and secondly, she married the Irish peer Randal MacDonnell, 1st Marquess of Antrim.