In Celtic Ireland the name Leo was Lugh, another solar hero and mystic. In Wales he was Llew, to the Romans Lugus, to the Sumerians Lughal. Its not the same dude on walkabout, it's the Astrological sign of Leo. In the Christian iconography we have one of the Evangelists represented by a Lion. In the Nativity scenes we see 4 animals around the cradle of the Son/Sun king. One of these is also a Lion. Christians probably believe that there was one in the area and just happened to wander into the inn to take a peek at sleeping Jesus. Good thing it wasn't very hungry.