Lord Ilbert de Lacie I of Pontefract Castle
Ilbert was born in 1045 in Loei, Normandy, France.  He died at the age of 48 in 1093 in Pontrefact, Yorkshire, England.

 Hawise of Halton
Hawise was born in 1045 in Halton, Chestershire, England.

 Lord Robert de Lacy of Pontefract
Robert was born about 1070 in Halton, Cheshire, England.

 de Lacy