Be22 Sir Henry Beaumont


was the son of Louis de Brienne Be23 and Agnes, Vicomtesse de Beaumont Be23.
Be22 Sir Henry Beaumont, 1st Earl of Buchan
Born: before 1263.
Died before 10 March 1339/40.3 
His will was probated in January 1342 at Lincoln, Lincolnshire, England..
Married: Alice Comyn Cu22, daughter of Sir Alexander Comyn Cu23 and Joan le Latimer La23, before 14 July 1310.
Children of Sir Henry Beaumont, 1st Earl of Buchan and Alice Comyn were:

Catherine de Beaumont+ d. 11 Nov 1368
Be21-1 Elizabeth Beaumont d. 27 Oct 1400
Be21-2 Richard Beaumont
Be21-3 John Beaumont
Be21-4 Thomas Beaumont
Be21-5 Alice Beaumont
Be21-6 Joan Beaumont
Be21-7 Beatrice Beaumont
Be21 Sir John de Beaumont, 2nd Lord Beaumont b. c 1317, d. bt 10 May 1342 - 25 May 1342
Be21-9 Isabella de Beaumont+ b. c 1320, d. a 23 Mar 1336

Sir Henry Beaumont, 1st Earl of Buchan fought in the Scottish Wars in 1302, with King Edward I.2 He was invested as a Knight before 1308.3 He held the office of Joint Warden of Scotland (south of Forth) in 1308.2 In 1307/8 he was granted large estates in Lincolnshire.2 He was created 1st Lord Beaumont [England by writ] on 4 March 1308/9.3 He held the office of Lordship of the Isle of Man between 16 March 1310 and 20 October 1312.3 He held the office of Envoy to France between 1312 and 1331.4 In 1312/13 he had livery of lands from John Comyn, Earl of Buchan.3 He fought in the Battle of Bannockburn on 24 June 1314.5 He held the office of Constable of England in 1322.3 He was invested as a Privy Counsellor (P.C.) in 1322.3 He fought in the Battle of Boroughbridge on 16 March 1321/22.3 On 5 June 1323 he was imprisoned for contempt and disobedience at the Council.3 In 1334 he received a grant of Loughborough Castle, for siding against the King and preventing the King's escape.3 He was created 1st Earl of Buchan [England by writ] on 22 January 1333/34.2 He held the office of Constable of England in 1336.3 He held the office of Justiciar [Scotland] in 1338.3 
     His descendants appear not to have used the title of Earl of Buchan. 
Source: http://www.thepeerage.com/p10288.htm#i102873

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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 I, page 340. Hereinafter cited as The Complete Peerage.
[S6] Cokayne, and others, The Complete Peerage, volume II, page 59.
[S6] Cokayne, and others, The Complete Peerage, volume II, page 60.
[S8] Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 227. Hereinafter cited as Burke's Peerage and Baronetage, 106th edition.
[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.
[S6] Cokayne, and others, The Complete Peerage, volume I, page 307.
[S8] Charles Mosley, Burke's Peerage and Baronetage, 106th edition, volume 1, page 228.