I David
I was born about 1080.  He died on May 24th, 1154 in Carlisle.

 Countess of Huntingdon Maud
Countess of Huntingdon was born in 1072.  She died at the age of 59 in 1131.

 Henry de Huntingdon
Henry was born in 1114.  He died at the age of 38 on June 12th, 1152.