Robert III Keith, Marischal of Scotland
|Sir Robert Keith|
|Great Marischal of Scotland|
|Spouse(s)||Margaret de la Hay|
|Noble family||Clan Keith|
Sir Robert Keith (died 1346) was a Scottish nobleman and a hereditary Great Marischal of Scotland.
Sir Robert Keith was the son of John Keith, Master of Marischal, and the grandson of Robert II Keith, Marischal of Scotland, who commanded the Scottish cavalry at the Battle of Bannockburn, and his wife Barbara Douglas. He succeeded his grandfather as Great Marischal.
Robert Keith fought for King David II of Scotland in his wars against Edward Balliol and the English. He was also the Sheriff of Aberdeen. He fought Macduff, Earl of Fife, when he fortified Perth and after a three-month siege the Marischal prevailed and took Perth. Macduff was sent to Kildrummy as a prisoner. When David II, King of Scotland invaded England in 1346 Robert was with him and at the Battle of Neville's Cross on 17 October 1346, Robert was killed. He was succeeded by his great-uncle, Sir Edward Keith, Great Marischal of Scotland.
- The title "Master of Marischal is a courtesy title given to a Scottish heir presumptive who either had not yet inherited at that time, or for some reason did not inherit the title (in this case Marischal of Scotland). See the Complete Peerage, Vol. IV, Appendix E: Courtesy Titles. The name of John's wife, Robert's mother, is unknown. See Complete Peerage VIII, 470.
- George Edward Cokayne, The complete Peerage; or, A history of the House of lords and all its members from the earliest times, Volume VIII, Ed. H. A. Doubleday & Howard de Walden (London: The St. Catherine Press, Ltd., 1932), pp. 469-70
- John Mackintosh, Historic Earls and Earldoms of Scotland (Aberdeen: W. Jolly & Sons, 1898), p. 274
- P. Buchan, The Ancient and Noble Family of Keith (Clark & Sangster, Peterhead; G. Clark, Aberdeen, A. Constable &Co. and W. Laing, Edinburgh; and G.&W.B. Whittaker, London, 1820), p. 33
- The Scots Peerage, Founded on Wood's Edition of Sir Robert Douglas's Peerage of Scotland, Vol. I, Ed. James Balfour Paul (Edinburgh: David Douglas, 1904), p. 278