Simon II De Of Northampton Earl
Simon II De was born about 1090 in , , Northamptonshire, England.  He died in August 1153.  He was buried in 1153 in Northampton, , Northamptonshire, England.

 Isabel De Beaumont
Isabel was born in 1122.  She died after 1153.  She was buried after 1153.

 Isabel De St Lis
Isabel was born in , Huntingdon, England.