0:20:31.000,0:20:36.000  We are talking once again about the 12th century, and both the two characters stand for Papal legitimacy 0:20:37.000,0:20:48.000   at a time when the Western Church looked for firmness because it coped with invasions by the barbarians 0:20:49.000,0:20:52.000    and was at odds with the Eastern Byzantine church over various issues. 