People Katherine Grey noblewoman; Potential successor to the English throne (1540-1568)25 August 1540 – 5 February 1568 Henry Grey, 1st Duke of Suffolk17 January 1517 – 23 February 1554Frances Grey, Duchess of Suffolk16 July 1517 – 30 November 1559 Katherine Grey25 August 1540 – 5 February 1568Henry Herbert, 2nd Earl of Pembroke1538 – 19 January 1601Edward Seymour22 May 1539 – 6 April 1621 ParentsHenry Grey, 1st Duke of Suffolk17 January 1517 – 23 February 1554Frances Grey, Duchess of Suffolk16 July 1517 – 30 November 1559Spouses and partnersHenry Herbert, 2nd Earl of Pembroke1538 – 19 January 1601Edward Seymour22 May 1539 – 6 April 1621SiblingsLady Jane GreyOctober 1537 – 12 February 1554Mary Grey20 April 1545 – 30 April 1578 From Wikipedia and Wikidata (public domain), updated daily.
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