Robert De Vere
Robert was born about 1165 in Hatfield, Essex, England.  He died on October 25th, 1221 in Essex, England.

 Isabel De Bolbec
Isabel was born in 1160.  She died at the age of 46 in 1206.

 Hugh De Vere
Hugh was born in 1184 in Hatfield, Essex, England.  He died at the age of 79 on December 23rd, 1263 in England.