Analysis of information sources in references of the Wikipedia article "Protipapež Janez XVI." in Slovenian language version.
JOHN XVI Antipope from 997 to 998, a Greek from Calabria, Giovanni Filagato had a long career that was much assisted by the imperial court.
This John, known as John Philagathos, Greek by birth, was a native of Rossano in Calabria, southern Italy
John (XVI), original name Giovanni Filagato, Latin Johannes Philagathus (b. , Rossano, Calabria—d. Aug. 26, 1001), antipope from 997 to 998. A monk of Greek descent whom the Holy Roman emperor Otto II named abbot of the monastery of Nonantola, Italy, he attained an influential position at the court of Otto's widow, the empress Theophano.
