Monaco's royal wedding this weekend reminded our history editor that the "real" Grimaldi family is Sicilian. That's because the Sicilian branch of the family descends in the direct male line from the Grimaldi family that lived in Genoa in the Middle Ages, while the princedom of Monaco has been transmitted through female heirs twice. Today's rulers of the Principality of Monaco are actually de Polignacs. An academic issue, to be sure.
Read about Prince Albert's Sicilian cousins in our article on the Grimaldis of Sicily.