Lord William de Say III
William was born in 1209 in West Greenwich, Kent, England.  He died at the age of 63 on February 12th, 1272 in Rochester Castle, Kent, England.

 Sibyl Marshall
Sibyl was born in Lenton, Lincolnshire, England.  She died in 1254.

 Agnes de Say
Agnes was born in 1249 in West Greenwich, Kent, England.  She died in Newtimber, Sussex, England.

 Lord William de Say IV
William was born on November 20th, 1253 in Rocester, Kent, England.  He died about September 16th, 1295.

 Mary de Saye
Mary was born in 1257 in Thurston, Suffolk, England.