Katherine Power

Katherine Power, who died in 1660, was the mother of Katherine FitzGerald, Viscountess Grandison, who lived from 1660 to 1725. Katherine FitzGerald was the mother of Harriet Villiers, who died in 1736. Harriet Villiers was the mother of William Pitt, 1st Earl of Chatham, who served as Prime Minister of Great Britain from 1766 to 1768. William Pitt, the son of the 1st Earl of Chatham, was William Pitt the Younger, a prominent British statesman who lived from 1759 to 1806.