William Pierrepont

Parents

• Gertrude Pierrepont, Countess of Kingston-upon-Hull
• Robert Pierrepont, 1st Earl of Kingston-upon-Hull

Children

• Grace Pierrepont
• Gertrude Savile, Marchioness of Halifax
• Robert Pierrepont
• Gervase Pierrepont, 1st Baron Pierrepont
• Frances Pierrepont

Siblings

• Francis Pierrepont
• Henry Pierrepont, 1st Marquess of Dorchester
• Frances Pierrepont

Partners

• Elizabeth Harries