Pope Innocent III and St Dominic
The foundation of the Inquisition had already been laid by Pope Innocent III. and St. Dominic who share between them the merit of this work. The fourth Lateran Council, commencing November 1215, had seen St. Dominic receive the Pontiff's commission to judge apostate heretics and deliver punishment to the obstinate and relapsed..
That St. Dominic died before it was completed alters not the question touching his connection with its authorship, though of late a vindication of him has been attempted on this ground, only by shifting the guilt to his Church. The fact remains that St. Dominic accompanied the armies of Simon de Montfort and delivered the Albigenses to the secular judge to be put to death. In short he lead the rudimentary Inquisition of the day.