 Complete the following phrase:  The Christians led by Alonso Pérez de Guzmán 12561309 entered the town in 1303 after the moor, who have settled in Southern Spain since the 8th Century, had deserted it. Guzman claimed these territories for the crown of Castille, and his possessions in Southern Spain eventually led to the foundation of the dukedom of Medina-Sidonia. The 