What director had a film in the 1952 Cannes Film Festival and was married to Judy Garland for a short time?
1952 Cannes Film Festival:  The festival opened with "An American in Paris" by Vincente Minnelli. Vincente Minnelli:  He was married to Judy Garland from 1945 until 1951; they were the parents of Liza Minnelli.
Vincente Minnelli