Hugh IV de Gaunt
Hugh IV was born about 1090 in Folkingham, Lincolnshire, England.  He died about 1124.

 Adeline Newburgh de Beaumont
Adeline Newburgh was born about 1102 in Beaumont, Normandy, France.

 Thurston de Montfort
Thurston was born about 1120.  He died about 1180.