From the mid 13th century, literature and philosophy started to flourish again in the Christian peninsular kingdoms, based on Roman and Gothic traditions. An important philosopher from this time is Ramon Llull. Abraham Cresques was a prominent Jewish cartographer. Roman law and its institutions were the model for the legislators. The king Alfonso X of Castile focused on strengthening this Roman and Gothic past, and also on linking the Iberian Christian kingdoms with the rest of medieval European Christendom. Alfonso worked for being elected emperor of the Holy Roman Empire and published the Siete Partidas code. The Toledo School of Translators is the name that commonly describes the group of scholars who worked together in the city of Toledo during the 12th and 13th centuries, to translate many of the philosophical and scientific works from Classical Arabic, Ancient Greek, and Ancient Hebrew.