John de Fiennes
John was born before 1320.  He died after 1335.

 Maud de Monceaux
Maud was born before 1315.  She died after 1335.

 William de Fiennes
William was born in 1330.  He died at the age of 29 in 1359.

 Maude de Chatillon
Maude was born about 1335.  She died in 1378.