Family: Robert Willoughby / Margaret Deincourt (F9874)
m. Abt 1303
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Male
Robert Willoughby
Birth Abt 1273 Of Willoughby, D'Eresby, Northumberland, England 
Death Bef 25 Mar 1317 Burial Marriage Abt 1303 Of Willoughby, D'Eresby, Lincolnshire, England Father Mother
Female
Margaret Deincourt
Birth Abt 1275 Of, Blankney, Lincolnshire, England Death Bef 18 Oct 1333 Of Willoughby, D'Eresby, Lincolnshire, England Burial Father Mother
Male
John Willoughby
Birth Abt 1302 Of Wiloughby, D'Eresby, Lincolnshire, England Death 1349 Burial Spouse Joane Roscelin | F9799 Marriage 2 Jul 1323
Female
Joan De Willoughby, [COUNTESS OF ANG
Birth Abt 1314 Of Willoughby, D'Eresby, Lincolnshire, England Death 16 Jul 1350 Burial Newminster Abbey, , Northumberland, England Spouse Gilbert Umfreville, [EARL OF ANGUS] | F10328 Marriage Abt 1331 Of Castle, Prudhoe, Northumberland, England