Simon III De Saint Liz
Simon III De was born about 1138 in Northamptonshire, England.  He died in June 1184 in St Andrew Abbey, Northampton, England.

 Alice De Gaunt
Alice was born about 1140 in Folkingham, Lincoln, England.

 Simon IV de Saint Liz
Simon IV de was born about 1165 in Northamptonshire, England.