William de GRANDISON, KNIGHT

Birth:
Abt 1255/64
of Cassington, Oxfordshire, England
Death:
27 Jun 1335
Marriage:
Abt 1285/86
of Donyatt, Somersetshire, England
Sources:
Ancestral File
Sybil TREGOZ
Birth:
1271
Ewyas, Herefordshire, England
Death:
12 Oct 1334
Sources:
Ancestral File
Notes:
                   Invalid endowment temple code: SLAKR.
Children
Marriage
1
Piers (Peter) de GRANDISON, BARON GRANDISON
Birth:
1286
of Ashperton, Herefordshire, England
Death:
10 Aug 1358
Sp
Blanche de MORTIMER, BARONESS GRANDISON 
Marr:
Bef 10 Jun 1330
of Wigmore, Herefordshire, Eng 
2
Agnes GRANDISON
Birth:
Abt 1289
Bletsoe, Bedfordshire, England
Death:
4 Dec 1348
 
Marr:
 
3
Mabilia de GRANDISON
Birth:
Abt 1294
of Ashperton, Herefordshire, England
Death:
4
John GRANDISON
Birth:
1299
of Ashperton, Herefordshire, England
Death:
 
Marr:
 
5
Katherine de GRANDISON
Birth:
Abt 1304
Ashford, Hertfordshire, England
Death:
23 Nov 1349
Bisham, Berkshire, England
William de MONTAGU (MONTACUTE) 
Marr:
1327
of Cassington, Oxfordshire, En 
FCID:6361:4324
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William de Grandison, Knight - Sybil Tregoz

William de Grandison, Knight was born at of Cassington, Oxfordshire, England Abt 1255/64. His parents were Pierre I Sire de Grandson and Agnes de Neuchatel.

He married Sybil Tregoz Abt 1285/86 at of Donyatt, Somersetshire, England . Sybil Tregoz was born at Ewyas, Herefordshire, England 1271 daughter of John de Tregoz, Lord and Mabel Fitzwarin .

They were the parents of 5 children:
Piers (Peter) de Grandison, Baron Grandison born 1286.
Agnes Grandison born Abt 1289.
Mabilia de Grandison born Abt 1294.
John Grandison born 1299.
Katherine de Grandison born Abt 1304.

William de Grandison, Knight died 27 Jun 1335 .

Sybil Tregoz died 12 Oct 1334 .