User blog comment:IamJakuhoRaikoben/Chapter 444: Emperor Spriggan, Review./@comment-24546844-20150713134245/@comment-26537859-20150713135557

Makarov never, ever, ever, ever have met Zeref. Maybe he heard rumors about him, or some people, they just recognise the person without being able to see him. (As far as I know, that is.)