Oswestry, [101], [116]

Owen ap Griffith, [65], [66]

Owen Cyfeiliog, [85]

Owen Gwynedd, [42-45]

Oxford, [133], [134]

P

Pant-y-wenol, [245]

Pauncefote, John, [216]

Pembroke, [40], [41], [262], [316]

Pengwern, [7]