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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6074459
    Disgrifiad
    Bonvilston Ring, Glamorgan; measured drawing comprising plan produced by C.J. Spurgeon, undated.
    Enw Casgliad
    GIEC - RCAHMW Glamorgan Inventory Early Castles
    Cyfrwng
    Graphic.
    Cychwynnwr
    Mr C. Jack Spurgeon, RCAHMW