Peter (or Piers) deRos
Peter (or Piers) was born about 1088 in of,Holderness,Yorkshire,England.  He was buried about 1130 in Rievaulx Abbey,,Yorkshire,England.

 Adeline Espec
Adeline was born about 1092 in of,Old Warden,Bedfordshire,England.  She died before 1155.

 Robert deRos
Robert was born about 1124 in of,Helmsley,Yorkshire,England.  He died about 1162.