Roger (Ralph) de BYRON
Roger (Ralph) de was born in 1157 in Derby, Derbyshire, England.  He died at the age of 42 in 1199.

 Nicola de VERDUN
Nicola de was born in 1156 in Farnham Royal, Buckinghamshire, England.  She died in Horeston Castle, Derbyshire, England.

 Robert BYRON
Robert was born about 1182 in Byron, Lancashire, England.