Zij is getrouwd met Marmaduke 1st Baron de Thweng.
Zij zijn getrouwd in het jaar 1273.Bron 1
Kind(eren):
He [Marmaduke de Thweng] married, in 1273, Isabel, daughter of SirWilliam De Ros, of Ingmanthorpe, Yorks, by (it is said) Eustache, widowof Nicholas DE CAUNTELO, daughter and heir of Ralph FITZHUGH. She died in1309 (b). He died shortly before 26 February 1322/3. [Complete PeerageXII/1:740-1, (transcribed by Dave Utzinger)]
(b) L'Anson says that she was buried in the north aisle of the chancel ofGuisborough Priory.
Isabel de Ros | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1273 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Marmaduke 1st Baron de Thweng |
mother of Katherine