Which name did John Huston's character use in the film "Chinatown"?

"Scarlett O'Hara's Younger Sister" is Evelyn Keyes' autobiography which details fascinating snippets about Huston to whom she was married for 4 years. Interesting lady. Her other 2 marriages were also to famous people: Charles Vidor (film director) & Artie Shaw (band leader). Her most famous film is "The Jolson Story" where she played his wife, a sanitized version of Ruby Keeler's actual life with the charismatic singer. Argument could be made that "Gone With The Wind" was her most famous picture, but she only had a couple of small scenes in it.

Huston was a true icon!!