William de ROS & Lucy FITZPIERS 
They had a son named William de.
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Personal Details
William de ROS
William de was born about 1196 in Helmsley Castle, North Rdiing, Yorkshire, England. He died in 1264 in Poitou, France.
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Children
William de ROS
William de was born about 1240 in Ingmanthorpe, Kirk deighton, Yorkshire, England. He died on May 28th, 1310 in Grey Friars, York, Yorkshire, England.