User blog comment:B214/Question and Answers 2/@comment-75.93.25.66-20140306230702/@comment-24053170-20140306231117

He is the oldest living devil in the entire series, so my guess is yes, he does. though considering the live span of a devil is at least 100,000 years, my guess is he is near the tail end of his lifespan if he knew the previous Maou.

though the record for oldest living thing in this series belongs to ophis, who was alive at the beginning of time.