Robert de Condet
He died about 1141.

 Alice de Gernons le Meschines of Chester
Alice de Gernons le Meschines of was born in Hertford, Hertfordshire, England or Normandy, France.  She died in 1128 in Hertford, Hertfordshire, England.

 Roger de Condet
Roger was born before 1128.  He died after 1145.

 Isabel de Condet
Isabel was born about 1128 in Great Carlton, Lincolnshire, England.  She died after 1166.