Coity Castle, [37], [231], [259], [260], [275]

Colwyn, [98]

Colwyn ap Tangno, [232]

Conway, [52], [61], [64-66], [75-78], [97], [98], [138-140], [218], [219], [323]

Cornwall, conquest of, [16]

Cornwall, Sir John, [217]

Corwen, [44], [106], [122]

Courtenay, Richard, [291]

Courtenays, the, [214]

Craig-y-dorth, battle of, [229]