Catherine Percy was born 18 May 1423 in Leconfield, Yorkshire, England, United Kingdom to Henry Percy, 2nd Earl of Northumberland (c1392-1455) and Eleanor Neville (1398-1472) and died circa 1499 England, United Kingdom of unspecified causes. She married Edmund Grey, 1st Earl of Kent (1416-1490) 1458 JL .
Children
| Name | Birth | Death | Joined with |
| Anthony Grey (c1443-1480) | 1443 | 1480 | Eleanor Woodville (c1452-1512) |
| George Grey, 2nd Earl of Kent (-1503) | 1454 | 21 December 1503 | Anne Woodville (c1438-1489) Catherine Herbert (c1450-c1504) |
| Elizabeth Grey (-1472) | 18 July 1472 | Robert Greystoke (1438-1483) | |
| Anne Grey (c1450-) | |||
Footnotes (including sources)