Ricardo Richiardi (1895 - 1937) born in Argentina, billed himself as The Great Richiardi
Early in his career he worked with Ricardo Richardine, Sr. (no relation).
His show consisted of magic in first half and ventriloquism in the second. He brought his show on tour to the United States in 1936. His illusion show became so large that if all the magic was presented in one continuous performance, the show would run over 7 hours.
-  Here Comes Richardine by Arthur Leroy, Genii 1959 November.