Margherita Sarfatti was an influential Jewish member of the PNF whom Mussolini had known since he and her had been members of the PSI and she had been his mistress and helped write "Dux" (1926), a biography of Mussolini. One of the Jewish financial supporters of the Fascist movement was Toeplitz, whom Mussolini had earlier accused of being a traitor during World War I. Another prominent Jewish Italian Fascist was Ettore Ovazza, who was a staunch Italian nationalist and an opponent of Zionism in Italy. 230 Italian Jews took part in the Fascists' March on Rome in 1922. In the early 1920s, Mussolini was cautious on topics of Italian Jewish financiers that arose from time to time from antisemitic elements in the Fascist movement, while he regarded them as untrustworthy he believed that he could draw them to his side. In 1932, Mussolini made his private attitude about Jews known to the Austrian ambassador when discussing the issue by saying: "I have no love for the Jews, but they have great influence everywhere. It is better to leave them alone. Hitler's antisemitism has already brought him more enemies than is necessary".