Ralph De Baskerville
Ralph was born in 1059 in Bosqueville, Manche, Normandy, France.  He died at the age of 89 in 1148 in Baskerville Castle, Eardisley, Herefordshire, England.

 Robert De Baskerville
Robert was born about 1090 in Baskerville Castle, Eardisley, Herefordshire, England.

 Roger De Baskerville
Roger was born in 1095 in Baskerville Castle, Eardisley, Herefordshire, England.  He died at the age of 83 in 1178.