Noun
One who is elected, or claims to be, pope in opposition to the pope canonically chosen; esp. applied to those popes who resided at Avignon during the Great Schism.
Source: Webster's dictionarythe antipopes resided in Avignon during the Great Schism Source: Internet
Annuario Pontificio, 2001 Due to Leo’s uncanonical election, it is now accepted that until the deposition of Benedict V, he was almost certainly an antipope. Source: Internet
As well as the Roman Martyrology, the Roman Missal identified the Saint Felix of 29 July with the antipope. Source: Internet
As a result, the council and the antipope were left without support. Source: Internet
At first, he called himself Benedict XIV, but afterwards altered the title to Benedict XIII (the previous Benedict XIII having been considered an antipope ). Source: Internet
Boniface VII was not yet considered an antipope when the next pope of that same regnal name was elected. Source: Internet