Christina was married first to William Bruce, lord of Annandale; later she was second wife of Earl Patrick (d.1232).
On Countess Christina, see Andrew B.W. MacEwen, ‘Seven Scottish Countesses: A Miscellany. III. Christina de Brus, Countess of Dunbar’, The Genealogist, Fall 2003, 223-33. Christina was first wife of William de Brus, who died × 1212; and secondly wife of Earl Patrick (I) of Dunbar, who died in 1232. Christina was thus the stepmother of Earl Patrick (II). MacEwen suggests persuasively that Countess Christina was a daughter of Walter son of Alan (I) the steward and a sister of Alan the steward. This is based on the evidence that Birkenside (BWK), which was held by Walter son of Alan the steward, was later part of the marriage portion of Countess Euphemia, wife of Earl Patrick (II) [see 3/15/74 below]. MacEwen suggests that Christina inherited Birkenside from her putative father, Walter son of Alan (I), and that Euphemia was her daughter with William de Brus. Thus, Christina, who married secondly Earl Patrick (I) of Dunbar, apparently had a daughter from her previous marriage, Euphemia de Brus, who married Earl Patrick (I)’s son from a previous marriage, Earl Patrick (II). Thus Countess Christina appears to have been both stepmother and mother-in-law to Earl Patrick II. See also Andrew B.W. MacEwen, ‘A Clarification of the Dunbar Pedigree’, The Genealogist, vol. 9, no. 2 (1988), 229-41