John de CRAWFORD 
He had a biological son named Gualterus (Galfridus).
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Personal Details
John de CRAWFORD
John de was born about 1138 in Crawford-John, Clydesdale, Lanarkshire, Scotland. John de is no longer alive.
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Children
Gualterus (Galfridus) CRAWFORD
Gualterus (Galfridus) was born about 1150 in Crawford-John, Clydesdale, Lanarkshire, Scotland. He died about 1189.