William I De Fiennes
William I was born about 1170 in Buckinghamshire, England.  He died in 1241 in Palestine.

 Agnes en Goelle De Dammartin
Agnes en Goelle was born in 1177 in Dammartin, Sem, France.

 Ingelram De Fiennes
Ingelram was born in 1192 in Knights Tolleshunt, Essex, England.  He died at the age of 75 in 1267 in Wendover Manor, Buckinghamshire, England.

 Mahaut De Fiennes
Mahaut was born in 1205.

 Michel De Fiennes
Michel was born about 1214 in Tolleshunt, Essex, England.

 William De la Plaunche De Fiennes
William De la Plaunche was born about 1215.