Occupation between 1954 and 1955 he was Marilyn's handyman, in New York.
He was used as driver, hairdresser and assistant at the time when she ran the Marilyn Monroe Productions with
He told James Haspiel, during the Summer 1955, that he had taken Marilyn to the nice area of Bowery, where she had given money to the homeless.
On August 6, 1955, he went with Marilyn to Bement (Illinois) where she inaugurated a museum dedicated
Their collaboration stopped suddenly when he claimed (wrongly according to Donald
that Milton Greene and Marilyn had promised to help him to be
self-employed. Leonardi had sued Marilyn and naively tried to win by
hostaging Marilyn's fur coats. Between November 6 to 9, 1955, the case was solved.