 He became kitchen boy at "The New York Bar" in Paris at the age of 16, and married at only 18.Petiot, known by his nickname "Pete", progressed to bartender under Harry MacElhone at "The New York Bar", later known as "Harry's New York Bar".There he is said to have invented the first Bloody Mary cocktail in the early 1920s, according to his granddaughter and Al Thompson.