William De I St. Omer 
William De I was born about 1070 in St Omer, Pas-De-Calais, France. William De I's father was Baldwin and his mother is Ida De Brabant. His paternal grandfather was Ourri Rable. He had a brother named III. He was the older of the two children. He died in 1128.
They had a son named William De II.
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Children
William De II St. Omer
William De II was born about 1090 in St Omer, Pas-De-Calais, France. He died about 1143.
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