Please answer the following question: Generate a question about the following movie plot: The highly successful jazz musician C.K. Dexter Haven (Bing Crosby) was divorced from wealthy Newport, Rhode Island socialite Tracy Samantha Lord (Grace Kelly), but remains in love with her. She, however, is about to get married to a bland gentleman of good standing, George Kittredge (John Lund). Spy Magazine, a fictional tabloid newspaper in possession of embarrassing information about Tracy's father, sends reporter Mike Connor (Frank Sinatra) and photographer Liz Imbrie (Celeste Holm) to cover the nuptials. Tracy begins an elaborate charade as a private means of revenge, introducing her Uncle Willy (Louis Calhern) as her father Seth Lord (Sidney Blackmer) and the latter as her Uncle Willy. Connor falls in love with Tracy, who must choose among three very different men in a course of self-discovery.
A:
What is the name of Tracy's father?