Sometime around 1190, King Alfonso VIII of Castile granted a royal charter to the community of Cuenca, a Castilian frontier town recently recaptured from the Muslims and resettled by Christians. The royal charter was in the form of a law code, or fuero. Fueros, which evolved from short lists of exceptions to standing royal directives into much more extensive commentaries on legal matters, were used as an incentive to Christian settlement on the frontier. Reflecting the complexities of administering a town that still had large Muslim and Jewish populations, the fuero or code of Cuenca was...