Ralph De Chesney
Ralph was born about 1035 in Guensney, Normandy, France.

 Maude De Waterville
Maude was born about 1040 in France.  She died in 1085.

 William De Chesney
William was born in 1055 in Sussex, England.

 Roger De Chesney
Roger was born about 1080 in Street, Sussex, England.  He died in Wyke Dive, Nottinghamshire, England.