Nithsdale, Lady, [252-4].

Nonconformity, [227-30].

Offa, [6], [245].

Ogam, [5].

Oliver Thomas, [155].

Ordovices, [23].

Owen ab Cadwgan, [191-3].

—— Glyndwr, [65], [120], [174-6], [195], [234], [291-8].

—— Goch, [94].

—— Gwynedd, [66], [196].