Welles never confirmed a principal source for the character of Charles Foster Kane. Houseman wrote that Kane is a synthesis of different personalities, with Hearst's life used as the main source. Some events and details were invented, and Houseman wrote that he and Mankiewicz also "grafted anecdotes from other giants of journalism, including Pulitzer, Northcliffe and Mank's first boss, Herbert Bayard Swope." Welles said, "Mr. Hearst was quite a bit like Kane, although Kane isn't really founded on Hearst in particular. Many people sat for it, so to speak". He specifically acknowledged that aspects of Kane were drawn from the lives of two business tycoons familiar from his youth in Chicago—Samuel Insull and Harold Fowler McCormick.