Not the same as Marjorie Comyn

Biography

http://www.thepeerage.com/p18646.htm#i186456

Lady Marjory Comyn is the daughter of Alexander Comyn, 6th Earl of Buchan and Elizabeth de Quincy.1 She married Patrick de Dunbar, 7th Earl of Dunbar, son of Patrick de Dunbar, 6th Earl of Dunbar and Cecil Fraser, before 1282.2

In April 1296 she was apparently of completely opposite loyalties to those of her husband since she held out in Dunbar Castle on behalf of the Scots against the besieging English till obliged to capitulate.2

Children of Lady Marjory Comyn and Patrick de Dunbar, 7th Earl of Dunbar

• Sir Alexander Dunbar+3 d. a 1331
• Patrick de Dunbar, 8th Earl of Dunbar+3 b. c 1285, d. 11 Nov 1368

Citations

1. [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 IV, page 507. Hereinafter cited as The Complete Peerage.
2. [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 1207. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
3. [S37] Charles Mosley, Burke's Peerage and Baronetage, 107th edition..

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He [Patrick de Dunbar] married, in or shortly before 1282, Marjory, daughter of Alexander (COMYN), EARL OF BUCHAN [SCT], by Elizabeth, daughter and coheir of Roger (DE QUINCI), EARL OF WINCHESTER. She held the Castle of Dunbar for the Scots till forced, 29 April 1296, to surrender it to Edward I. He died 10 October 1308, aged 66. [Complete Peerage IV:506-7 (transcribed by Dave Utzinger)]

Patrick III, Earl of Dunbar From Wikipedia, the free encyclopedia

He married before 1240, Cecily, daughter of John FitzRobert, Lord of Warkworth, Northumberland (d.1240),[5] [6] and had five known children:

Patrick IV, Earl of March, a 'Competitor'[7] (1242 - 1308), son and heir. Sir John de Dunbar, Knt.[8]
Sir Alexander de Dunbar, Knt.[9]
Agnes de Dunbar, who married Christell de Seton, 'in Jedburgh Forrest' (d.c1300)[10]
Cecily (or Cecilia) de Dunbar, who married Sir James Stewart, 5th High Steward of Scotland.

1.[S525] Colquoun_Cunningham.ged, Jamie Vans

2.[S541] Stirnet Genealogy, Peter Barns-Graham, Dunbar01 (Reliability: 3