George de Mohrenschildt
George Sergius de Mohrenschildt}}}} (April 17, 1911 – March 29, 1977) was an American petroleum geologist, anti-communist political refugee, professor, and occasional CIA field agent. De Mohrenschildt, who moved to the Dallas area in October 1961, is best known for having befriended Lee Harvey Oswald in the summer of 1962.De Mohrenschildt's testimony before the Warren Commission investigating the assassination was one of the longest of any witness.
Since his testimony and subsequent death years later, de Mohrenschildt has been a popular figure in conspiracy theories regarding the assassination of John F. Kennedy. For example, those who believe that the United States Government was responsible have accused de Mohrenschildt of being Oswald's CIA handler. On the other hand, Ion Mihai Pacepa, a high level defector from Communist Romania and occasional CIA asset, has alleged that de Mohrenschildt, despite his claims to be a descendant of the Russian nobility and an anti-communist political refugee from the Red Terror, was in reality a KGB First Chief Directorate illegal field agent, who focused on collecting military intelligence and who acted as Oswald's ''Soviet'' intelligence handler. Provided by Wikipedia