Wondering Jew, not me drunk? Hmmm? That's a tough one!
No, really, the UL got its start as a kind of morality tale in the early middle ages. Supposedly a Jew was at Jesus crusifiction and mocked him saying something ot the effect "You're not the son of G-d, you'll not come back fromthe dead". Jesus was supposed to cursed him and told him that he would have to wonder the earth until Judgement Day so that he could see that Jesus was the true son of G-d.
From time to time there where supposed sightings here and there around Europe during the middle ages and shortly there after. In some stories he was protrade as a wealthy courtison, in others a poor and starving vagabond.
The lions share of "sightings" stopped around the time of the inquisitions though. It seems that they had found a new boogeyman in themselves.
It is interesting to note that in Yiddish folklore, there is a character named "Elijah" who appears in times of need to help Jews out of trouble. Sometimes keeping a child from being beaten up by gentile villagers or saving a Jew from falling off of a building. I remember one tale in which a local priest had condemned the Jews in the parrish to be burned alive for not being Christian. Elijah was supposed to have saved the Jews by out-debating the local priest and proving that Christianity was wrong on several major points. In this tale, the priest converted to Judaism and was promptly executed by the Bishop. No word on why Elijah didn't save him, though!
It originated at a time when there was a lot of anti-semetism in Europe and tales of him often embody a lot of it as well. It's a good idea to remember that some Jews find the "Wondering Jew" tales to be offencive.
I found this mention on a site about Palistinians no less! "According to L Neubaur, the legend was founded on the words of Jesus as reported in Matthew 16:28: " Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of Man coming in his kingdom." Of the many names this figure acquired in his legendary travels over Christendom, including Ahasuerus, Matathias, Buttadeus, Cartophilus, and Uuan Espera, El-Guindi chose to call him in the play Isaac Laquedem (the name attributed to him in France, in popular legend as well as in a novel by Dumas)."
Here's a different linkSome in the Church tried to discourage the tales because they were afraid they might cause some discontent among the faithful. (What, this guy doubted Jesus and is rewarded with long life!?!)
By the way, it's also a type of plant.
What a long strange trip it's been, and the Wondering Jew wasn't even a Deadhead!