Leonard "Chico" Marx (March 22, 1887 – October 11, 1961) was the eldest of the Marx Brothers. He was originally nicknamed Chicko for his reputation as a ladies' man, or a "chicken chaser" in the popular slang of the day. A typesetter accidentally dropped the "k" in his name and it became Chico. It was still pronounced "Chick-oh" although those who were unaware of its origin tended to pronounce it "Cheek-oh".

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