This title refers to someone set up as Bishop of Rome in opposition to the one already holding the See; 2 lived in Avignon
[DOC] [TLE] The Great Western Schism (1378-1417) - Most Holy Family Monastery [PAR] 20, 1378, the cardinals proceeded to elect Clement VII as pope, who set up ..... 
so desperate during the Great Western Schism that people didn't see any way ... 
a disaster in which people were offered, at one point, three rival bishops, three .... 
Cardinal of the aforesaid Roman Church, or, as has already been mentioned,... [DOC] [TLE] The Bishops of Rome, the Popes; the Patriarchs of Constantinople ... [PAR] The One Holy Roman Catholic and Apostolic Church, Una Sancta Romana ... 
broken up -- setting aside the Protestant fragmention of the See of Rome in the 
West, .... the Romans were the most noble people who had ever lived, and that "
Rome ... what I call "Ecumenical," after the title of the Patriarch of Constantinople) 
and... [DOC] [TLE] Great Schism [PAR] The term Great Schism is used to refer to two major events in the history of ...