▁The ▁death ▁of ▁Ser g ius ▁created ▁an ▁opportunity ▁for ▁Des ider ius ▁to ▁bring ▁his ▁influence ▁upon ▁the ▁dioc ese . ▁Louis ▁Marie ▁De C orm en in ▁wrote ▁in ▁his ▁history ▁that ▁Leo ▁was ▁imprison ed ▁at ▁R im ini ▁by ▁Lomb ard ▁soldiers ▁while ▁Michael ▁assumed ▁his ▁seat ▁at ▁R aven na . ▁No ble ' s ▁account ▁does ▁not ▁include ▁this ▁detail . ▁Supp or ters ▁of ▁Michael ▁in ▁the ▁city ▁of ▁R aven na ▁sent ▁requests ▁to ▁Pope ▁Stephen ▁III ▁for ▁his ▁consec r ation ▁as ▁Arch bishop ▁with ▁the ▁b ri be ▁of ▁g ifts ▁in ▁return . ▁Stephen ▁refused ▁and ▁according ▁to ▁De C orm en in ▁had ▁Michael ▁ex communic ated . ▁▁ ▁Leo ' s ▁luck ▁took ▁a ▁fort un ate ▁turn ▁when ▁during ▁a ▁diplom atic ▁mission ▁to ▁Rome ▁in ▁ 7 7 0 , ▁the ▁mother ▁of ▁Char lemagne , ▁Ber tr ada ▁of ▁La on ▁agreed ▁with ▁Stephen ▁that ▁her ▁son ▁would ▁provide ▁aid ▁in ▁resol ving ▁the ▁dispute ▁over ▁R aven na . ▁Char lemagne ▁sent ▁his ▁miss us ▁H ug b ald ▁to ▁arrest ▁Michael ▁and ▁bring ▁him ▁to ▁Rome . ▁This ▁allowed ▁Leo ▁to ▁finally ▁take ▁his ▁seat ▁at ▁R aven na ▁and ▁begin ▁properly ▁as ▁the ▁dioc ese ' s ▁Arch bishop . ▁ ▁Ar rest ▁of ▁Paul ▁A fi arta ▁ ▁In ▁ 7 7 2 , ▁following ▁his ▁election , ▁Pope ▁Had rian ▁I ▁set ▁out ▁to ▁remove ▁the ▁influence ▁of ▁Paul ▁A fi arta