 He died while serving a prison sentence, after having been convicted of being an accomplice to murder.Many details of his life are disputed, but it is widely thought that his birth name was either Hal Wadell (or Waddell), or Ramón Ícarez, and that he was born in Texas.He claimed to have been born on August 11, 1902, but FBI sources state that he admitted that his birth was in 1892.