Commentary
Cawley: "A charter which records the foundation of Motisfont Priory, Hampshire states that “dominus Willielmus Briwer, fundator ecclesiæ de Mottesfount” donated land "in Muchelmares" and revenue from land "in villa de Burbache" for the soul of "Beatricis uxoris suæ qui obiit IX Kal Apr". The Complete Peerage states that Dugdale calls the wife of William de Briwere "Beatrice de Valle, says she was the mistress of Rainald Earl of Cornwall", but does not cite a primary source on which this information is based. The chronology does not appear to favour the subsequent marriage of the mistress of Earl Renaud to William de Briwere. The marriages of the latter’s children are recorded in the first decade of the 13th century, their births being therefore estimated to [1185/1200]. Even if Earl Renaud’s mistress gave birth to the earl’s illegitimate son in the last decade of his life (when he would have been in his sixties), it is unlikely that she could have continued bearing children into the later 1190s."
Family
ClaimDetailEvidence
SpouseWilliam de Briwere (e1148-1226) 
Child +Margery de Briwere (e1172-1237) [S1525] [S2856]
research
Child +Alice de Briwere (e1176-) [S756] [S2856]
research
Child +Grace de Briwere (e1177-<1215) [S756] [S3168]
research
Attributes
ClaimDetailEvidence
GenderFemale
NameBeatrice [S2856]
research
Timeline
ClaimDateDetailAgeEvidence
Birthest 1149 (1143-1154)
 
Sources
IndexTitle
[S2856] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - English Untitled Nobility A-C)" (v4.8 Updated 06 June 2024) (https://fmg.ac/Projects/MedLands/enguntac.htm).