See Manning and Bray's Surrey, vol. iii. p. 41; and Gent. Mag. for 1789, p. 223; for a notice of this family, as well as of the extinct family of the same name, of Sutton, in this county, see also Gent. Mag. for 1800, p. 606.
Arms.—Sable, a chevron or between three leopard's heads erased argent, crowned or.
Present Representative, Henry Weston, Esq.
Onslow of West-Clandon, Earl of Onslow 1801; Baron 1716; Baronet 1660.
Although the foundation of the consequence of this family was laid by Richard Onslow, a celebrated lawyer of the reign of Elizabeth, yet he was sprung from an old gentle family seated at Onslow in Shropshire, as far back as the time of Richard I., and probably much earlier. The first recorded ancestor is John de Ondeslowe, whose grandson, Warin, was father of "Roger de Ondeslow juxta Shrewsbury," whose son Thomas was living in the twelfth of Edward II. 1318. Richard Onslow became Speaker of the House of Commons, and died in 1571. He was the first of his family connected with Surrey, by his marriage with Catherine, daughter and heir of Richard Harding, of Knoll, in this county, in the year 1554. West-Clandon was purchased in 1641 by Sir Richard Onslow, created a Baronet in 1660; the ancient family estate of Onslow having been sold by Edward Onslow in 1617.
Younger Branches. Onslow of Altham in the county of Lancaster, Baronet 1797, descended from the next brother of the Right Hon. Arthur Onslow, Speaker of the House of Commons from 1726 to 1761. Onslow of Staughton, in the county of Huntingdon, descended from the second son of Sir Richard Onslow, the first Baronet.
See Brydges's Collins, vol. v. p. 461; Manning and Bray's Surrey, vol. ii. p. 723; and Blakeway's Sheriffs of Shropshire, p. 90, corrected by the MSS. of Mr. Joseph Morris.
Arms.—Argent, a fess gules between six Cornish choughs proper.
Present Representative, Arthur George Onslow, third Earl of Onslow.