Reto Rossetti (born 11 April 1909, died 20 September 1994 in the British Gosport) was an Italian-Swiss, later a British, Esperantist professor. His elder brother was Cezaro Rossetti, author of "Kredu min, sinjorino!" ("Believe me, Ma'am!"). Wikipedia
The definitive Wikipedia entry for Reto Rossetti. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Reto_Rossetti