Otho, [230], [286]

Otto III., Emperor, [16]

Oudenardes, [169]

Ouen, St., [58]

Oxford, [168], [210], [248], [255], [354]

Pacheco, [25]

Padua, [305]

Pala d'Oro, [23], [97], [98]

Palermo, [311]

"Pancake Man" [245]