William de Grandison , Sir 
William was born in 1263 in Cassington, Oxfordshire, England. William's father was Pierre I Sire de Grandson and his mother is Agnes de Neuchatel. His paternal grandparents were Ebal IV Sire de Grandson and Beatrix de Geneva; his maternal grandparents are Ulric III de Neuchatel and Yolande de Urach Arberg. He was an only child. He died at the age of 72 on June 27th, 1335 in Gascony, France.-
Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 1087 in Grandeson, Waadt, Switzerland d.04 May 1130
- b.1110 in La Sarraz, Waadt, Switzerland d.1158 in Jerusalem, Palestine
- b.~ 1050 in La Sarraz, Waadt, Switzerland d.1141
- b.~ 1133 in La Sarraz, Waadt, Switzerland d.> 1177
- b.1154 in Grandson, Waadt, Switzerland d.AFT 26 Jan 1234/1235
- b.1134 in La Sarraz, Waadt, Switzerland
- b.1190 in Neuchatel, Switzerland d.> 1263
- b.< 1045 in Geneva, Switzerland d.> 1134
- b.1100 in Geneva, Switzerland d.26 Jun 1178
- b.< 1086 in Geneva, Switzerland
- b.1154 in Geneva, Switzerland d.Apr 1257
- b.1126 in Switzerland
- b.1263 in Cassington, Oxfordshire, England d.27 Jun 1335 in Gascony, France
- b.1150 in Urach, Baden, Germany
- b.~ 1220 in Neuchatel, Switzerland
- b.1160 in Urach, Baden, Germany d.1230
- b.1188 in Urach, Baden, Germany
- b.1158 in Urach, Baden, Germany d.10 May 1239
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‌William and Sybil were married in a religious ceremony in 1286 in Donyatt, Somersetshire, England. They had a son and three daughters, named Piers, Agnes, Mabilla and Katherine.
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Children
Piers de Grandeson
Piers was born in 1287 in Ashperton, Herefordshire, England. He died at the age of 71 on August 10th, 1358.
Agnes de Grandeson
Agnes was born in 1289 in Bledsoe, Bedfordshire, England. She died at the age of 59 on December 4th, 1348 in England.
Katherine de Grandeson
Katherine was born in 1304 in Ashford, Hertfordshire, England. She died at the age of 45 on November 26th, 1349 in Bisham, Berkshire, England.
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