*Katherine de Grandison
born about 1304 Ashford, Hertfordshire, England
died 23 November 1349 Bisham, Berkshire, England
buried Bisham, Berkshire, England

father:
*William de Grandison
born about 1255/64 Of Cassington, Oxfordshire, England
died 27 June 1335

mother:
*Sybil Tregoz
born 1271 Ewyas, Herefordshire, England
died 12 October 1334
married about 1285/86 Of, Donyatt, Somersetshire, England

siblings:
Piers (Peter) de Grandison born 1286 Of, Ashperton, Herefordshire, England died 10 Aug 1358
Mabilia de Grandison born about 1294 Of, Ashperton, Herefordshire England
Agnes Grandison born about 1289 Bletsoe, Bedfordshire, England died 4 December 1348
John Grandison born 1299 Of Ashperton, Herefordshire, England

spouse:
*Baron William de Montagu
born 1302/03 Cassington, Oxfordshire, England
died 30 January 1343/44 Windsor Castle, 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