William De Montague & Katherine De Grandison 
They had three sons and four daughters, named John, William III, <Unknown>, Elizabeth, Sibyl, Phillipa and <Unknown>.
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Personal Details
William De Montague
William was born in 1301 in Cassington, Oxfordshire, England.1 He died in Windsor, England.1
Katherine De Grandison
Katherine was born in 1296 in Cassington, Oxfordshire, England.2 She died at the age of 53 on November 23rd, 1349 in Bisham, Berkshire, England.2
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Children
Elizabeth De Montague
Elizabeth was born in 1325 in Donyatt, Somerset, England.2 She died at the age of 34 on May 31st, 1359 in Walwyns Castle, Pembrokeshire, Wales.2
John De Montague
John was born in 1327 in Donyatt, Somerset, England.3 He died in Donyatt, Somerset, England.
William III De Montague
William III was born on June 25th, 1328 in Donyatt, Somerset, England.2 He died at the age of 68 on June 3rd, 1397 in Castle Wallingford, Berkshire, England.2
Sibyl de Montague
Sibyl was born in 1334 in Windsor Castle, Berkshire, England.2 She died at the age of 40 on June 30th, 1374 in Castle Arundel, Sussex, England.2
Phillipa De Montague
Phillipa was born in 1342 in Windsor Castle, Berkshire, England.2 She died in Bisham, Berkshire, England.2
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