Siward FitzDunning (Sir) de LATHOM & Helga de KEVELIOC 
They had a son named Henry FitzSiward (Sir) de.
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Personal Details
Siward FitzDunning (Sir) de LATHOM
Siward FitzDunning (Sir) de was born on July 4th, 1073 in Lathom, Ormskirk, Lancashire, England.
Helga de KEVELIOC
Helga de was born about 1074 in Kevelioc, Monmouthshire, Wales. She died on December 13th, 1094.
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Children
Henry FitzSiward (Sir) de LATHOM
Henry FitzSiward (Sir) de was born on April 27th, 1093 in Lathom, Ormskirk, Lancashire, Egland. He died at the age of 35 on June 12th, 1128.