*Baron William de Montagu
born 1302/1303 Cassington, Oxfordshire, England
died 30 Jan 1343/1344 Windsor Castle, Berkshire, England
buried Bisham, Berkshire, England

father:
*William de Montagu
born about 1275 Of, Cassington, Oxfordshire, England
died 18 October 1319/1320

mother:
*Elizabeth de Montford
born about 1275 Of, Beaudesert, Warwickshire, England
died 1345
buried Christ Church, Oxford, Oxfordshire, England
married about 1292 Of, Cassington, Oxfordshire, England

siblings:
Mary de Montagu born 1313 Salisbury, Wiltshire, England
John Montagu born 1299 Salisbury, Wiltshire, England
Simon Montagu born 1303 Salisbury, Wiltshire, England died 1336
Maud Montagu born 1307 Salisbury, Wilsthire, England
Edward Montagu born 1309 Salisbury, Wilsthire, England died 1342
Alice Montagu born 1311 Salisbury, Wiltshire, England
Katherine Montagu born 1315 Salisbury, Wiltshire, England
Hawise Montagu born 1317 Salisbury, Wiltshire, England
Isabel Montagu born 1319 Salisbury, Wiltshire, England

spouse:
*Katherine de Grandison
born about 1304 Ashford, Hertfordshire, England
died 23 November 1349 Bisham, Berkshire, England
buried Bisham, Berkshire, England
married 1327 Of, Cassington, Oxfordshire, England

children:
John de Montagu born about 1327 Donyatt, Somersetshire, England
died 25 February 1389/90 buried Cathedral, Salisbury, Wiltshire, England
Robert Montagu born about 1334 Of, Shepton Montague, Somersetshire, England
Anne (Anneys) de Montagu born about 1330 Of, Cassington, Oxfordshire, England
William de Montagu born 25 June 1328 Of, Salisbury, Wiltshire, England
christened Of, Donyatt, Somersetshire, England died 3 June 1397
buried Conventual Church, Bustlesham, Montacute, Somersetshire, England
*Sibyl de Montagu born about 1330 Of, Donyatt, Somersetshire, England
Elizabeth de Montagu born after 1327 Of, Donyatt, Somersetshire, England
christened Of, Salisbury, Wiltshire, England died 31 May 1359 Ashley, Hampshire, England
buried Abbey, Tewkesbury, Gloucestershire, England
*Philippe de Montagu born about 1332 Of, Salisbury, Wiltshire, England
died 5 January 1381/82 Bisham, Berkshire, England buried Bisham, Berkshire, England

biographical and/or anecdotal:

notes or source:
LDS