Oldham, Bishop: Rebus, [147]

Onslow: Motto, [138]

Opinions, [140]

Oppressed, Debruised, [140]

Or, [40], [140]

Orders of Knighthood. See Knighthood

Order of Merit, [286]

Ordinaries, [42], [49];
their structural Origin, [14], [64]

Ordinary of Arms, [140]. See Armory

Oreiller, [140]