NICHOLAS V antipope

[aball1035]

I was reading the vatican website and came across it saying that NICHOLAS V (1328-1330) was an antipope.

asv.vatican.va/en/visit/sig/nicoloV.htm

What did he do to cause this?

 

[MarkThompson]

Hopefully this will be explained briefly enough at:

en.wikipedia.org/wiki/Antipope

and

en.wikipedia.org/wiki/Antipope_Nicholas_V