(1) She is married to Robert 1st Baron de Willoughby.
They got married before 1303.Sources 1, 2
Child(ren):
Margaret, daughter of 1st Lord (Baron) Deincourt. [Burke's Peerage]
-------------------
He [Robert de Willoughby] married, in or before 1303, Margaret, daughterof Edmund (DEINCOURT), 1st LORD DEINCOURT, by Isabel, daughter of SirReynold DE MOHUN, of Dunster, Somerset. He died shortly before 25 March1317. She died shortly before 18 October 1333. [Complete PeerageXII/2:657-8, (transcribed by Dave Utzinger)]
Margaret Deincourt | |||||||||||||||||||||||||||||||||||
< 1303 | |||||||||||||||||||||||||||||||||||
Robert 1st Baron de Willoughby |