Mack, original name Michael Sinott. 1884–1960, US film producer and director, born in Canada, who produced many silent comedy films featuring the Keystone Kops, Charlie Chaplin, and Harold Lloyd, for the Keystone Company
Sennett in American English
(ˈsɛnɪt)
Mack (mæk) (born Michael Sinnott) 1884-1960; U.S. film producer & director, esp. of slapstick comedies, born in Canada