Biography of William Pierrepont, 4th Earl of Kingston-upon-Hull (c.1662-1690)
- Robert Pierrepont, 1st Earl of Kingston-upon-Hull (1584-1643)
- Henry Pierrepont, 2nd Earl of Kingston-upon-Hull and Marquess of Dorchester (1607-1680)
- Robert Pierrepont, 3rd Earl of Kingston-upon-Hull (c.1660-1682)
- William Pierrepont, 4th Earl of Kingston-upon-Hull (c.1662-1690)
- Evelyn Pierrepont, 1st Duke of Kingston-upon-Hull (c.1665-1726)
- William Pierrepont, Earl of Kingston-upon-Hull (1692-1713)
- Evelyn Pierrepont, 2nd Duke of Kingston-upon-Hull (1711-1773)
- Charles (Medows) Pierrepont, 1st Earl Manvers (1737-1816)
- Charles Herbert Pierrepont, 2nd Earl Manvers (1778-1860)
- Sydney William Herbert Pierrepont, 3rd Earl Manvers (1825-1900)
- Charles William Sydney Pierrepont, 4th Earl Manvers (1854-1926)
- Evelyn Robert Pierrepont, 5th Earl Manvers (1888-1940)
- Gervas Evelyn Pierrepont, 6th Earl Manvers (1881-1955)
William was the second son of Robert Pierrepont of Thoresby, Nottinghamshire, and his wife Elizabeth Evelyn. He was born at West Dean, Wiltshire (an estate brought to the Pierrepont family by the marriage of Robert Pierrepont with Elizabeth Evelyn), and entered Trinity College, Oxford, in 1681.
He succeeded his brother as Earl of Kingston in 1682. In 1683 he purchased land in the hays of Bilhagh in Sherwood Forest, and further land in Perlethorpe from the Crown in order to form Thoresby Park.
In 1689 and 1690 he acted as Colonel of a Regiment of Foot, Lord Lieutenant of Nottinghamshire and the East Riding of Yorkshire, Chief Justice in Eyre North of the Trent, and High Steward of Kingston-upon-Hull.
However, in September 1690 he died of apoplexy at Holme Pierrepont. He was succeeded as 5th Earl by his brother Evelyn Pierrepont.
He married Anne, daughter of Robert Greville, 4th Baron Brooke, in 1685. There were no children.
His widow later married William Pierrepont of Nottingham, and died in 1702.
- Title deeds and estate papers relating to the Earl's ownership of his estates are held at The British Library (Egerton Charters 2301-8836; Egerton MSS 3516-3660)
- There are no notable published works concerning the 4th Earl