 Osbert was accused of murdering William , specifically by poisoning him through the communion chalice . A fellow cleric , Symphorian , who had been a chaplain of the deceased archbishop , brought murder charges against Osbert . Symphorian obtained a hearing on the charges at a royal council presided over by King Stephen of England at Michaelmas in 1154 , but Stephen 's subsequent death prevented a resolution . Osbert attempted to have the trial switched to an ecclesiastical court and was supported in his efforts by Archbishop Theobald of Canterbury . A trial was finally held in 1156 and Osbert 's accuser did not produce any witnesses , but Osbert was unable to prove his innocence , prompting the transfer of the case to a papal court . No record of any judgment exists , but Osbert apparently appeared before two popes , Adrian IV and Alexander III . A further appeal to the papal court was referred to papal judges @-@ delegate between 1175 and 1180 . 
 Osbert was accused of murdering William , specifically by poisoning him through the communion chalice . A fellow cleric , Symphorian , <a href='null_relcl' title='1'><mark>who</mark></a>had been a chaplain of the deceased archbishop , brought murder charges against Osbert . Symphorian obtained a hearing on the charges at a royal council presided over by King Stephen of England at Michaelmas in 1154 , but Stephen <a href='null_genetive' title='2'><mark>'s</mark></a>subsequent death prevented a resolution . Osbert attempted to have the trial switched to an ecclesiastical court and was supported in his efforts by Archbishop Theobald of Canterbury . A trial was finally held in 1156 and Osbert <a href='null_genetive' title='3'><mark>'s</mark></a>accuser did not produce <a href='None' title='4'><mark>any</mark></a><a href='negative_concord' title='5'><mark>witnesses</mark></a> , but Osbert was unable to prove his innocence , prompting the transfer of the case to a papal court . No record of any judgment <a href='uninflect' title='6'><mark>exists</mark></a> , but Osbert apparently appeared before two popes , Adrian IV and Alexander III . A further appeal to the papal court was referred to papal judges @-@ delegate between 1175 and 1180 . 
Osbert was accused of murdering William , specifically by poisoning him thru da communion chalice . A fellow cleric , Symphorian , had been a chaplain of tdadeceased archbishop , brought murder charges against Osbert . Symphorian obtained a hearing on thdaharges at a royal council presided ova by King Stephen of England at Michaelmas in 1154 , but Stephen  subsequent death prevented a resolution . Osbert attempted to have thedaial switched to an ecclesiastical court and was supported in his efforts by Archbishop Theobald of Canterbury . A trial was finally held in 1156 and Osbert  accuser did not produce no witnesses , but Osbert was unable to prove his innocence , prompting the dansfer of the case to a papal court . No record of any judgment exist , but Osbert apparently appeared b4 two popes , Adrian IV and Alexander III . A further appeal to the pdal court was referred to papal judges @-@ delegate between 1175 and 1180 .