The Ruby in Her Navel by Barry Unsworth
The Court of King Roger in Twelfth century Sicily simmers with the volatile passions of Christians, Muslims, Jews, Latins and Greeks. Among them, a young Norman called Thurstan Beauchamp finds employment under Yusuf, a Muslim who holds the Christian king's purse strings. But while Thurstan wishes to be made a Knight, he has little taste for courtly intrigues and instead divides his time between the divine - in the shape of childhood sweetheart Lady Alicia - and the delightful: the sensuous and exotic dancer Nesrin. However, in his pursuit of love and knighthood, Thurstan has yet to appreciate that he may also be a pawn in a far more deadly game ...