William de Fiennes Sheriff of Somerset
William was born about 1160 in Buckinghamshire, England.  William is no longer alive.

 Agnes de Dammartin
Agnes was born in 1166 in Buckinghamshire, England.

 Baldwin de Fiennes
Baldwin was born in 1190.

 Sir Enguerran de Fiennes II Lord Martock
Sir Enguerran de Fiennes II was born about 1192 in Buckinghamshire, England.

 Mahaut de Fiennes