W.T.F. Was billy lewis?

In Scous folklore and mythology who the fcuk was Billy Lewis? During my first post mob trucking job trying to get tipped on Liverpool and Birkenhead Docks , from the length of dock road from the Stanley to the Gladstone docks when asking for the checker, the answer was always thus;_ " E wont be long der lar e's over da ale house wid Billy Lewis". Who the fcuk was this mystical Billy Lewis?