Lordship of Mediana and the Fernández de Heredia family Historical milestone · Mediana de Aragón, Comarca Central, Zaragoza Image of Mediana de Aragón, not of the place itself. Alfonso II bequeathed Mediana to his son Pedro II, who sold it to Pedro Sesé. In 1368 Juan Martínez de Luna transferred the castle and the place to Blasco Fernández de Heredia. The seigneurial regime was maintained until the municipality became independent in 1834. 1368 Photo: Millars (CC BY-SA 4.0) What to see and do in Mediana de Aragón