When immigration officials greeted him at Pan American Hospital, he said he was a 13-year-old orphan from Colombia who sneaked into the Arca Airline plane’s wheel well. Name? “Guillermo Rosales.” That was the first lie. Now he has matured into one of the world’s notorious jewelry thieves, who has escaped prison and dizzied detectives in at least five countries using a slew of stolen identities: A budding doctor studying in Ireland. A Colombian diplomat’s son. An English family man. A New York priest. A German prince. A wealthy Bahraini.