Hameline Plantagenet
Hameline was born about 1129.  He died on May 7th, 1202 in Lewes, Sussex, England.

 Isabelle De Warenne
Isabelle was born about 1137 in Surry, England.

 William De Warenne
William was born about 1155 in Surrey, England.  He died on May 27th, 1240 in London, England.

 Isabelle De Warenne
Isabelle was born about 1172 in Norfolk, Norfolk, England.  She died in 1199.