Peter (Piers) de ROS 
Peter (Piers) de was born in 1087 in Ros, Holderness, Yorkshire, England. Peter (Piers) de's father was Malcolm de ROS. He was an only child. He died at the age of 66 in 1153.
They had a son named Robert (Sir) de.
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Children
Robert (Sir) de ROS
Robert (Sir) de was born about 1105 in Ros, Holderness, East Ride Yorkshire, England. He died in 1162 in Helmsley Castle, Yorkshire, England.