William I de Fiennes, Sheriff of Somerset was born circa 1160 to Enguerrand I de Fiennes (1128-1189) and Sybille de Tingry (c1140-aft1223) and died circa 1240 of unspecified causes. Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899). Ancestors are from France, the United Kingdom, Belgium, Germany.
|Offspring of William I Fiennes and Agnes de Dammartin (c1166-)|
|daughter de Fiennes (c1188-?)|| |
|Baldwin de Fiennes (c1190-?)|| |
|William de Fiennes (c1200-?)|| |
|Enguerrand II de Fiennes (c1210-1265)||1210||1265|| Isabelle de Conde (c1214-)|
|Mahaut de Fiennes (c1210-aft1244)||1210||1244|| Baudouin III de Guînes (1198-1244)|
- William Allen Shade 01:46, 21 August 2009 (UTC)