▁a ▁part isan ▁of ▁Carol ing ian ▁legit im ist ▁claim ant ▁Charles ▁III , ▁opposed ▁it ▁and ▁tried ▁to ▁install ▁a ▁rival ▁bishop , ▁The ut b ald ▁II . ▁Although ▁Pope ▁Stephen ▁V ▁s ided ▁with ▁Ful k , ▁A ure li an ▁refused ▁to ▁consec rate ▁The ut b ald ▁and ▁Ar gr im ▁remained ▁in ▁power ▁at ▁Lang res . ▁During ▁this ▁time , ▁Ar gr im ▁had ▁the ▁support ▁of ▁King ▁O do ▁of ▁France , ▁who ▁issued ▁a ▁di pl oma ▁to ▁him ▁on ▁ 1 9 ▁December ▁ 8 8 9 . ▁ ▁After ▁two ▁years ▁and ▁three ▁months , ▁in ▁the ▁aut umn ▁of ▁ 8 9 0 , ▁Ar gr im ▁was ▁forced ▁to ▁fle e ▁Lang res ▁and ▁The ut b ald ▁was ▁installed ▁as ▁bishop . ▁According ▁to ▁the ▁Ann ales ▁V ed ast ini , ▁in ▁late ▁ 8 9 4 ▁The ut b ald ▁was ▁assass in ated ▁and ▁Ar gr im ▁returned ▁to ▁power . ▁Pope ▁Form os us ▁immediately ▁an ath emat ised ▁the ▁assass ins , ▁but ▁granted ▁the ▁pal li um ▁to ▁Ar gr im . ▁In ▁ 8 9 6 , ▁Pope ▁Stephen ▁VI , ▁who ▁had ▁been ▁an ▁enemy ▁of ▁Form os us , ▁declared ▁Ar gr im ▁de posed . ▁Ar gr im ▁went ▁to ▁Rome ▁to ▁protest , ▁and ▁in ▁ 8 9 9 ▁John ▁IX ▁rev oked ▁the ▁de position . ▁His ▁successor , ▁Bened ict ▁IV , ▁confirmed ▁the ▁rev