Family: 3rd Baron Montagu William Montagu / Catherine De Grandison (F936)
m. 1320
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Male
3rd Baron Montagu William Montagu
Birth 1301 Oxfordshire, England 
Christening 1320 Death 30 Jan 1344 Berkshire, England Burial 1344 Berkshire, England Marriage 1320 Oxfordshire, England Father 2nd Baron Montagu William De Montagu | F3060 Group Sheet Mother Baroness Montagu Elizabeth De Montfort | F3060 Group Sheet
Female
Catherine De Grandison
Birth 1304 Herefordshire, England Death 23 Nov 1349 Berkshire, England Burial 1349 Berkshire, England Father 1st Baron Grandison William De Grandison | F889 Group Sheet Mother Sibyl De Tregoz | F889 Group Sheet
Male
+ John Montagu
Birth 1328 Somerset, England Death 25 Feb 1389 Devonshire, England Burial 1389 Wiltshire, England Spouse Margaret de Monthermer | F8846 Marriage 2 Jul 1350 Devonshire, England
Female
+ Sybil Montagu
Birth Abt 1332 Somerset, England Death 30 Jan 1354 Somerset, England Burial Spouse Edmund Arundel | F8935 Marriage Bef Jul 1349
Female
+ Countess Of March Philippa De Montacute
Birth 5 Jan 1332 Wiltshire, England Death 5 Jan 1381 Berkshire, England Burial Spouse Roger De Mortimer | F719 Marriage Abt 1358 Perthshire, England