Final answer:
Conrad of Marburg was made an Inquisitor in the 1230s by Pope Gregory IX and was murdered in 1233.
Step-by-step explanation:
Conrad of Marburg was appointed as an Inquisitor during the early phase of the Inquisition in the 1230s by Pope Gregory IX who aimed to combat heresy across Western Christendom. Unfortunately, his career was brief as Conrad was murdered in the year 1233. The motivations behind his murder are subject to speculation, but one could infer they were connected to the harsh and often brutal methods he employed on those accused of heresy, invoking widespread fear and resentment.