Who was Jack the Ripper?

Probably a priest 

First of all London at the time was full of travellers from abroad it was a busy port it was full of comunities there were Jews and Irish French Italian it was an international place , the criminal committed several horrific murders disfiguring the bodies on the footpath in the dead of night , and a room the victims were prostitutes , very little was seen of these events and the community were scared to help if they did information was zero with no modern forensics it was impossible find the killer ,its claimed body parts were taken out with the skill of a surgeon and placed beside the body its an absolutley appalling event in human history , the murders stopped and never occurred again which is strange the creature was clearly insane and this is a classic compulsive disorrder so it eithet died went back to its country or emigrated that is my humble opinion 

Google and Wikipedia will be a lot more helpful to you than anyone here.