'roscoe rejects universally held as legitimate Popes left and right'.
This is quite inaccurate as the only Popes I have concluded are anti-popes(besides the ones listed in Fr Radecki's book minus the Avignon Popes) are 2--Boniface 8 and Urban 6. As far as Ben XV(15?) I only suspect him as an anti-pope and could be wrong there; the subject definitely needs further research.
And Boniface hardly qualifies as 'universally held as legitimate'. Dante and many others have suspected Boniface.
Scroll down for pic of the throne of the anti-pope Boniface--this is open in your face blasphemy. This alleged pope was protecting the same v2 masonic cult that is is power today.
Bl Benedict XI and Clem V both dropped all charges against the courageous King Philip and absolved him from any suspected nefarious activity. Philip, his sons and Nogaret were all killed in retaliation for their purge of the 'pope' who was protecting v2 Templar order. http://www.cathinfo.com/bb/index.php?a=topic&t=4268&min=0&num=15