John de Blackburn , Sir 
John de was born about 1205 in Blackburn, Lancashire, England. John de's father was Adam de Blackburn , Sir. He was an only child. John de is no longer alive.
He had a biological son named Adam de.
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Children
Adam de Blackburn , of Wiswall, Sir
Adam de was born about 1235 in Blackburn, Lancashire, England. He died in Wiswall, Whalley, Lancashire, England.
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