From a central core formed by the "Hermandad de las Cuatro Villas" ("Brotherhood of the Four Cities") (Santander, Laredo, Castro Urdiales and San Vicente de la Barquera), the "Hermandad de las Marismas" ("Brotherhood of the Marshes") was created, thereby uniting all the important seaports to the East of Asturias. During the period of the Reconquista, the Four Cities actively participated in the re-settling of Andalusia, dispatching men and ships. The coastal port cities of Cádiz and El Puerto de Santa María were settled by families from the Cantabrian Sea ports. Ships from the Four Cities took part in the taking of Seville, destroying the ship bridge linking Triana and Sevilla, a victory that is represented by the Carrack and the Torre del Oro of Sevilla in the coat of arms of Santander, Coat of arms of Cantabria and Avilés (Asturias).