*William De Grandison
born Abt 1255/1264 Of Cassington, Oxfordshire, England
died 27 Jun 1335

father:
*Pierre I Sire De Grandson
born Abt 1190 Neuchatel, Switzerland
died Btw 29 July 1259 & 1257 Dec 15

mother:
*Agnes De Neuchatel
born Abt 1194 Neuchatel, Switzerland

siblings:
Amadeus De Grandson
born 1229 Neuchatel, Switzerland
died 1300

spouse:
*Sybil Tregoz
born 1271 Ewyas, Herefordshire, England
died 12 Oct 1334
married Abt 1285/1286 Of, Donyatt, Somersetshire, England

children:
*Katherine De Grandison
born Abt 1304 Ashford, Hertfordshire, England
died 23 Nov 1349 Bisham, Berkshire, England
buried Bisham, Berkshire, England
married 1327 Of, Cassington, Oxfordshire, England

biographical and/or anecdotal:

notes or source:
LDS