Cuno I, Archbishop of Trier

Conrad (or Cuno) of Pfullingen (died 1066) was the archbishop of Trier (sometimes called Cuno I) briefly in 1066. Prior to his elevation to the archbishopric, he had been the provost of Cologne Cathedral. His uncle, Archbishop Anno of Cologne, in a bid to consolidate the supremacy of his church over Trier, invested Conrad with the archbishopric at court in May 1066, without the consent of the people or clergy of Trier. (Anno was the regent for the young Henry IV at the time.) On his way to Trier, Conrad was arrested by Count Theoderic, advocate of Trier, and murdered by four of Theoderic's vassals. Nobody was ever punished for the murder, and the people of Trier elected Udo of Nellenburg as archbishop in Conrad's place. In 1073, Theoderic went on a barefoot pilgrimage to Jerusalem to atone for his sin.

...
Wikipedia