Jaén is a city in south-central Spain. The name is derived, with all probability, from the Roman name Villa Gaiena "Muy Noble y muy Leal Ciudad de Jaén, Guarda y Defendimiento de los Reynos de Castilla", (English) "Very Noble and very Loyal City of Jaén, Guard and Defense of the Kingdoms of Castile". This title was given by King Enrique II of Castile to the city of Jaén, due to the privileges that the city had, and to the role that the city was playing in the defense of the kingdom of Castile against the Moors.