Francisco de Goya
The Apparition of St. Isidore to King Ferdinand III Before the Walls of Seville

1798-1800
Oil on canvas
National Museum of the Beaux Arts, Buenos Aires, Argentina

The cathedral of Seville, originally dedicated to St. Isidore, had long been used as a mosque when the city was reconquered by Ferdinand III in 1248, when it was rededicated. The cathedral's liturgy for the annual feast of the rededication included a declaration that it was St. Isidore who appeared to Ferdinand in a vision and urged him to retake the city and rescue his cathedral, which had been "profaned by the infidels for so many centuries."

Read more about St. Isidore of Seville.

Source: Wikimedia Commons