How he became Jack

Jack.
A pretty common name, don't you think?
But did you know that it was one of the most , if not the most, feared name in London, in 1888?
You must think: "what about London? what happened in 1888?"
the thing is.... 'Jack the Ripper' happened in London, in 1888.
But what really happened in 1888?
no one really knows about what really happened, but one thing is sure...
You'd be surprised to learn how "he" became known as Jack.