The painting, by Polish artist Pius Wleonski, depicts the King's Victory over his own Past, represented by a dragon - he was a viking in his youth, before he became a Christian. It was a gift for Pope Leo XIII for the 50th anniversary of his episcopal ordination. Bishop Fallize of Norway asked that it be placed in this church, where an altar had been set aside. It was presented to the Holy Father on 3 March 1893 by Baron Wedel Jarlsberg. The Holy Father supported the idea of a Norwegian chapel in Rome, and the painting was placed here.