William 'The Younger' PEVERELL
William 'The Younger' was born about 1080 in Nottingham, Nottinghamshire, England.  He died after 1155 in England.

 Avice de LANCASTER
Avice de was born about 1088 in Nottingham, Notinghamshire, England.  She died after 1149.

 Helen PEVERELL
Helen was born in 1115 in Oswestri, Shropshire, England.