Katherine Percy, Countess of Kent

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This article is about the Countess of Kent. For the English gunsmith and mechanic, see Lady Katie Percy.

Katherine Percy
Countess of Kent
Born	18 May 1423
Died	1475
Spouse(s)	Edmund Grey, 1st Earl of Kent
Issue	Mary Grey Anthony Grey Elizabeth Grey Anne Grey George Grey, 2nd Earl of Kent John Grey Edmund Grey
Father	Henry Percy, 2nd Earl of Northumberland
Mother	Lady Eleanor Neville

Lady Katherine Percy (18 May 1423 – c. 1475) was the daughter of Henry Percy, 2nd Earl of Northumberland, and Lady Eleanor Neville.

Her maternal grandparents were Ralph Neville, 1st Earl of Westmorland and his second wife Joan Beaufort, a legitimized daughter of John of Gaunt.

She married Edmund Grey, 1st Earl of Kent, and had seven children:

Mary Grey (1440–1474);
Anthony Grey (1446–1480), married Eleanor Woodville, daughter of Richard Woodville, 1st Earl Rivers;
Elizabeth Grey (d. 1472), married Sir Robert Greystoke;
Anne Grey (b. 1450), married John Grey, 8th Baron Grey de Wilton;
George Grey, 2nd Earl of Kent (1454–1505), married Anne Woodville;
John Grey (1455–1484);
Edmund Grey (b. 1457).