John Piocelle was born in 1906. Up to 1945, he was in a partnership with Frederic Hirst. Their business was named John-Frederic. In 1945, Hirst took the name and started up his own dress and hat business. Piocelle continued in the name of Mr. John from 1945 till he died in 1964.
From the 30's up to the 50's, the hats made by the duo as well as John himself, were very popular and successful. There was a collaboration with Adrian in 1930 to make the Eugenie Hat worn by Greta Garbo in the film "Romance".