 The square was projected after the disappearance of the old city walls and the convent in the 19th century.It is named after the 16th century nobleman Luis de la Cerda y de la Vega, count of Medinaceli, Cogolludo and Arcos de Jalón, a descendant of the Montcada family, who gave away the terrain to the Franciscans.It had previously been known as "plaça de sant Francesc" and "plaça dels Framenors", and from the construction of the square as we see it now, "Manuel Azaña", "Duque de Medinaceli" and "Barcas".