1. | Lady Dorothy Sidney, 1st Countess of Sunderland was born 5 Oct 1617; died 5 Feb 1684. Lady married Henry Spencer, 1st Earl of Sunderland. Henry (son of William Spencer, 2nd Baron Spencer of Wormleighton and Lady Penelope Wriothesley) was born 23 Nov 1620, Althrop House, Northamptonshire, England; died 20 Sep 1643. [Group Sheet] Children:
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