|SOME NOTES ON MEDIEVAL ENGLISH GENEALOGY|
Volume 9, page 268:
HUGH DE MORTIMER, [son of Ralph de Mortimer, the Domesday tenant] s. and h. Hugh de Mortimer attested a charter by Gerold, Abbot of St. Lucien at Beauvais [1100-28], in the time of Stephen, Count of Aumâle.
Robert de Mortimer of Norfolk attested a charter of Henry de Beaumont, earl of Warwick, who died in 1119. If Robert was Hugh's younger brother, this suggests Hugh was born before 1100 [Ian Mortimer, The Medieval Mortimer Family: An outline lineage, version 6.1 (17 May 2019), page 10]. (See Mortimer of Attleborough.)
[Item last updated 22 June 2019.]
Volume 9, page 276:
He [Ralph de Mortimer (d. 1246)] m., in 1230, Gladys (Gladusa) Duy, or Dark-eyed, da. of Llewelyn AP JORWORTH, by his 2nd wife, Joan (illeg. da. of KING JOHN), and widow of Reynold DE BRAOSE (d. June 1228).(j)
Ann. Mon. (Rolls Ser.), vol. iv, p. 421.
On the identity of Gladys's mother, see Abergavenny, vol. 1, p. 22.