The Watertons are not mentioned in connection with Cawthorne after 4 James I. (1607), their interest being sold soon after that time to the Wentworths of Bretton.
The Hall and Park of Cawthorne were settled upon Matthew Wentworth, the second son of Matthew Wentworth of Bretton, Esq., in the time of Charles I., and his younger brother Gervase had a messuage and mill at Cawthorne by the gift of his father in 1635.
In 13 James I. (1616) the king granted to their elder brother George Wentworth of Bullcliffe in West Bretton, gent., a Court Leet and view of frankpledge in Cawthorne and other places parcel of the Duchy of Lancaster. This lordship of the Manor of Cawthorne has continued to the present time in the owner of Bretton West.
A Sir William Wentworth, who died in 1763, married one of the sisters of Sir Thomas Blackett, and his son Sir Thomas Wentworth assumed the name of Blackett. By a will dated 29 May, 1792, he left Bretton and all his Yorkshire estates, including the Manor of Cawthorne, to Diana his daughter, married to Thomas Richard Beaumont, of the Oaks, Darton. He was succeeded by his son Thomas Wentworth Beaumont, Esq., many years M.P. for Northumberland, who died Dec. 20th, 1848, leaving his estates to his eldest son, their present possessor, the present lord of the Manor of Cawthorne, Wentworth Blackett Beaumont, of Bretton Hall and Bywell Hall, Esq., J.P., D.L., M.P. for South Northumberland. He was born April 11, 1829, and on March 6th, 1856, married Lady Margaret de Burgh, fourth daughter of the Marquess of Clanricarde. His heir, Wentworth Canning Beaumont, was born at Bywell, 29th Dec., 1860.
The name of Beaumont is found in connection with that of the de Laci family so far back as the time of Richard I., when Roger de Laci was accompanied by William Bellomonte in the Crusade of that time. The Widow of William de Bellomonte, or Beaumont, quit claimed to Henry de Laci, Earl of Lincoln, in 1294, and Annabella the widow of her son Sir Richard de Bellomonte had a grant of lands at Hodresfield (Huddersfield) from the same Henri de Laci.
