Catherine Grey was born circa August 1540 in Bradgate Park, Leicester, England, United Kingdom to Henry Grey, 1st Duke of Suffolk (1517-1554) and Frances Brandon (1517-1559) and died 27 January 1567 Cockfield Hall, Yoxford, Suffolk, England, United Kingdom of unspecified causes. She married Henry Herbert, 2nd Earl of Pembroke (c1538-1601) 21 May 1553 JL in Durham House, London, England, United Kingdom. She married Edward Seymour, 1st Earl of Hertford (1539-1621) 25 December 1560 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Offspring of Edward Seymour, 1st Earl of Hertford and Catherine Grey (c1540-1567)|
|Edward Seymour, Lord Beauchamp (1561-1612)||21 September 1561 Tower of London, England, United Kingdom||21 July 1612||Honora Rogers (-1608)|
|Thomas Seymour (1563-1619)|