In 1922, silent film screen actress and comedian Mabel Normand (1892-1930) lived in Altadena, residing in a house on Foothill Blvd (now Altadena Drive).
Normand began her film career making a name for herself in slapstick comedy. She helped Mack Sennett launch Keystone Studios where they produced Keystone Cop comedies. Normand also wrote and directed many of Charlie Chaplin's earliest shorts, often acting in them as well. In 1916, she opened her own production company and studio.