Baron Pierrepont is a title that has been created four times in British history. The first creation came in the Peerage of England on 29 June 1627 when Sir Robert Pierrepont was created Baron Pierrepont, also being created Viscount Newark at the same time. He was further created Earl of Kingston-upon-Hull in 1628. The fifth Earl was created Duke of Kingston-upon-Hull in 1715 in the Peerage of Great Britain, with the Dukedom becoming extinct on the death of the second Duke in 1773.
The fourth creation came in the Peerage of Great Britain on 23 July 1796 when Charles Pierrepont was made Baron Pierrepont, of Holme Pierrepont in the County of Nottingham. He was made Viscount Newark, of Newark on Trent, at the same time. Born Charles Medows, he was the son of Philip Medows and Lady Frances, daughter of William Pierrepont, Earl of Kingston, eldest son and heir apparent of Evelyn Pierrepont, 1st Duke of Kingston-upon-Hull. In 1788 he succeeded to the Pierrepont estates and assumed by Royal sign manual the same year the surname of Pierrepont in lieu of Medows. In 1806 he was further honoured when he was created Earl Manvers. All these titles became extinct on the death of the sixth Earl Manvers in 1955.