Who was the first defender to become the MVP of the Super Bowl?

superbowl V the Baltimore colts met the 1st time apearence cowboys and LB for the Dallas Cowboys:chuck howley was the first defender to win MVP and was the first player from a losing team to win superbowl MVP!!!!! howley made this feat by these stats:2 interceptions,few tackles as the cowboys lost 13-16 in final seconds!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!