Did I really meet I.F. Stone?

When I was 18, I did my European vacation alone by thumb and eurorail pass.  When I was in Venice, I took a boat one night from one island area to another and this old guy introduced himself to me and said he was I.F. Stone.  We talked during the boat trip, but I didn't really believe him.  I didn't ask him for ID, but I thought to myself that he was some old guy trying to pick me up thinking he could do better by impersonating I.F. Stone.  But maybe I was just being paranoid and he really was I.F. Stone.  But maybe he really was I.F. Stone trying to pick me up!  I would have gone on my merry way alone in any case.  I got to wondering today because Harper's has a post about its I.F. Stone memorial award.