William Pierrepont English politician (1607–1678) Parents Gertrude Pierrepont, Countess of Kingston-upon-Hull Robert Pierrepont, 1st Earl of Kingston-upon-Hull Children Robert Pierrepont Grace Pierrepont Gervase Pierrepont, 1st Baron Pierrepont Frances Pierrepont Gertrude Savile, Marchioness of Halifax Siblings Francis Pierrepont Frances Pierrepont Henry Pierrepont, 1st Marquess of Dorchester Partners Elizabeth Harries
