Not to be confused with her great-granddaughter Christina de Brus, born around 1256, daughter of Robert Bruce, 5th Lord of Annandale and Isabel de Clare, married Patrick II, Earl of Dunbar

http://fmg.ac/Projects/MedLands/SCOTLAND.htm:

wife of William de Brus: CHRISTINA, daughter of ---. Christina was the sister of Eva, second wife of Robert de Quincy (see ENGLAND EARLS, WINCHESTER), as shown by the undated charter under which "Eua quondam uxor Roberti de Quinci" donated property "de Edmundesten" to Melrose abbey, for the souls of "dominorum meorum Robti de Quinci et Walteri de Berkeley et Rolandi fratris mei et Johis filii mei et Christine sororis mee"[1009]. The Liber Vitæ of Durham names "Cristina uxor Willelmi de Brus, Robertus de Brus filius eius"[1010].

She married secondly (before 4 Dec 1214) as his second wife, Patrick Earl of Dunbar. "Patricius comes de Dumbar" donated land "iuxta Emudestu" to Melrose abbey, for the souls of "Ade comitisse quondam uxoris mee…et Christine comitisse uxoris mee et…Patricii filii mei et omnium filiorum meorum et filiarum", to Melrose abbey by undated charter[1011].

• http://en.wikipedia.org/wiki/Walter_Fitzalan - says "A daughter of Walter may have been Christina, a widow of William de Brus, Lord of Annandale (died 1211/1212), and second wife of Patrick I, Earl of Dunbar (died 1232)." Source: Hamilton (2003) p. 199. Hamilton, EC (2003). The Acts of the Earls of Dunbar Relating to Scotland c.1124–c.1289: A Study of Lordship in Scotland in the Twelfth and Thirteenth Centuries (PhD thesis). University of Glasgow – via Enlighten: Theses.
• MacEwen, Andrew. A Clarification of the Dunbar Pedigree. The Genealogist, 9(2) 1988: PDF
• Andrew B. W. MacEwen which was published in the Genealogist Fall 2003: Seven Scottish Countesses: A Miscellany - III. Cristina de Brus, Countess of Dunbar, Vol. 17, no.2, pages 223-233.
• Magna Carta line of Eufemia (was Eufemia wife of William Comyn of Kilbride) (2004)