Salvatore Marchesi  I am aware of what reference books say but Matilde Marchesis husbands correct name was Salvatore di Castrone presumably belonging to the ancient di Castrone family whose palazzo at Santa Ninfa outside Palermo Sicily is now a tourist attraction  To this he added the descriptive dei marchesi della Rajata meaning of the marquesses of Rajata to indicate which branch of the Castrone family he belonged to Rajata is a place in Sicily It is from these plural of the word marchese marquess or marquis that he chose his nom de thtre Salvatore Marchesi  He was known as the Cavaliere di Castrone because he was a nobleman but not a titled one