Mary Osborne

Lady Mary Osborne was born on 14 August 1688.2 She was the daughter of Peregrine Osborne, 2nd Duke of Leeds and Bridget Hyde.1 She was baptised on 21 August 1688 at North Mimms, Hertfordshire, England.2 She married, firstly, Henry Somerset, 2nd Duke of Beaufort, son of Charles Somerset, Marquess of Worcester and Rebecca Child, on 14 September 1711 at Wimbledon, Surrey, England.1 She married, secondly, John Campbell Cochrane, 4th Earl of Dundonald, son of John Cochrane, 2nd Earl of Dundonald and Lady Susanna Hamilton, on 15 October 1715.2 She died on 4 February 1722 at age 33 at Scotland, without issue.2 Her will was proven (by probate) in May 1722.2,3

    As a result of her marriage, Lady Mary Osborne was styled as Duchess of Beaufort on 14 September 1711. From 14 September 1711, her married name became Somerset. From 15 October 1715, her married name became Cochrane. Her last will was dated 3 February 1721/22.

Citations

[S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume II, page 53. Hereinafter cited as The Complete Peerage.

[S6] Cokayne, and others, The Complete Peerage, volume II, page 54.

[S2] Peter W. Hammond, editor, The Complete Peerage or a History of the House of Lords and All its Members From the Earliest Times, Volume XIV: Addenda & Corrigenda (Stroud, Gloucestershire, U.K.: Sutton Publishing, 1998), page 77. Hereinafter cited as The Complete Peerage, Volume XIV.