Robert de ROS 
Robert de was born about 1235 in Helmsley, Yorkshire, England. Robert de's father was William de ROS. He was an only child. He died on May 17th, 1285 in Yorkshire, England.
He had a biological son named William de.
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Children
William de ROS
William de was born in 1255 in helmsley, Yorkshire, England. He died before August 16th, 1316.