Orcagna, [34], [140], [183], [227]

Orebsc, S. M., [24]

Orghet, J., [166]

Oriental, [24], [84]

Orleans, [33]

Orso Magister, [222]

Orviedo, [278]

Orvieto, [33], [227], [244], [302], [310]

Osmont, [204]

Othlonus, [356]