Catholic Encyclopedia: "After many conferences, projects, discussions (oftentimes violent), interventions of the civil powers, catastrophes of all kinds, the Council of Constance (1414) deposed the suspicious John XXIII, received the abdication of the gentle and timid Gregory XII, and finally dismissed the obstinate Benedict XIII."
It's wrong and von Pastor is right? Who is von Pastor? What is his book called? When did he write it? What credibility does he have? WAS HE CATHOLIC?
And as to the second question, you can make it more clear by doing a great many things. You can answer these questions, for example:
FIRST OF ALL:
IF Boniface IX was...
Well was he roscoe, or wasn't he? And what support do you have for this?
SECOND OF ALL:
...trying to revive the legacy of the anti-pope...
What does this
mean? What legacy? Was he trying to get people to submit to the antipope again? Why would he do that if he was pope himself? Do you not realize how obscure and ambiguous your sentence was?
then he would be an antipope himself.
Why? Because he was heretical somehow? Or was submitting himself to a person who was now known as an antipope?
CLARITY MAN! CLARITY! Bring it!