Robert De Alencon
Robert was born in Montgomershire, Wales.  He died about 1132.

 Agnes De Ponthieu
Agnes was born in 1066 in France.  She died after October 8th, 1100.

 William Talvas Montgomery Despencer
William Talvas Montgomery was born in 1084.  He died at the age of 87 on June 30th, 1171.