Chiaramontesi (family), [124].

Clement V., Pope, [369-375], [386-390], [427].

Colle di Valdelsa (battle), [243-245].

Colonnesi, [103-104], [261], [317-318].

Conrad, son of Frederick II., [129], [131], [133], [139], [154-156].

—— I., Emperor, [78], [79].

Conradino, [156-158], [187], [192], [228-242].

Constance, Empress, [89-90], [92], [113].

Constantine, Emperor, [38-39].

Constantinople, [38-39].