▁around ▁the ▁country ▁and ▁he ▁question ed ▁several ▁witness es ▁in ▁Rou en , ▁where ▁Joan ▁was ▁imprison ed ▁and ▁executed , ▁sought ▁information ▁all ▁over ▁the ▁kingdom ▁about ▁her ▁life , ▁and ▁consult ed ▁several ▁law y ers ▁and ▁the olog ians ▁in ▁both ▁France ▁and ▁Europe , ▁as ▁well ▁as ▁Thomas ▁Bas in , ▁bishop ▁of ▁Lis ieux . ▁In ▁ 1 4 5 5 , ▁Cal li xt us ▁III , ▁the ▁Pope ▁at ▁that ▁time , ▁was ▁press ured ▁by ▁d ' Est oute ville , ▁representing ▁Joan ' s ▁mother ▁and ▁two ▁of ▁her ▁brothers , ▁to ▁clear ▁her ▁name . ▁In ▁response ▁to ▁the ▁pet ition , ▁Cal li xt us ▁gave ▁his ▁full ▁support ▁to ▁Br é hal ▁and ▁appointed ▁three ▁agents ▁that ▁would ▁assist ▁him ▁during ▁the ▁procedures : ▁Jean ▁J uv én al ▁des ▁Urs ins , ▁arch bishop ▁of ▁Re ims , ▁Guillaume ▁Chart ier , ▁bishop ▁of ▁Paris ▁and ▁Richard ▁Oliv ier ▁de ▁Long ueil , ▁bishop ▁of ▁C out ances . ▁ ▁During ▁his ▁research , ▁Br é hal ▁wrote ▁two ▁books ▁about ▁the ▁matter ; ▁in ▁the ▁first , ▁the ▁Sum m arium , ▁he ▁sets ▁out ▁the ▁facts ▁around ▁the ▁trial ▁of ▁ 1 4 3 1 ; ▁while ▁in ▁the ▁second , ▁he ▁ref utes ▁point ▁by ▁point ▁the ▁accus ations ▁against ▁Joan ▁on ▁the ▁basis ▁of ▁the ology ▁and ▁canon ▁law . ▁In ▁November ▁ 7 th ▁of ▁ 1 4 5 5 , ▁he ▁pres ided