Family: John (2nd Earl of Salisbury, 4th Baron Montagu) DeMontagu / Margaret De Monthermer (maid. name 1)

Maternal line John (2nd Earl of Salisbury, 4th Baron Montagu) DeMontagu
Katherine DeGrandison (maid. name 1) 1302 - 1349  (47 years)	_	Sir William ( 3rd Baron Montacute, 1st Earl of Salisbury, and King of Mann) De Montagu 1301 - 1334  (33 years)

Maternal line Margaret De Monthermer (maid. name 1)
Joan Geneville 1286 - 1356  (70 years)	_	Roger IV, 3rd Baron Mortimer, 1st Earl of March de Mortimer 1287 - 1330  (43 years)