Gilbert deGant
Gilbert was born in 1059 in Flanders, France.  He died at the age of 72 in 1131.

 Alice deMontfort
Alice was born in 1060 in Montfort, Normandy, France.  She died at the age of 73 in 1133.

 Walter deGaunt
Walter was born in 1080 in Folkingham, Lincolnshire, England.  He died at the age of 59 in 1139.