Robert IV de ROS
Robert IV de was born about 1233 in Helmsley Castle, North Ride Yorkshire, England.  He died on May 17th, 1285 in Belvior Castle, Leicestershire, England.

 Isabel d' ALBINI
Isabel is no longer alive.

 Joan de ROS
Joan de was born about 1252.  She died on October 13th, 1348.