Jean-Auguste-Dominique Ingres – Saint Rupert, Bishop of Worms (Saint Robert), study for a stained-glass window for the Chapelle Saint-Ferdinand; one of fourteen figures of saints Part 4 Louvre

The picture has something of this: people, veil, saint, Gothic, crown, church, Renaissance, man, sword, god, royalty, cape, monarch, ancient.
Perhaps it’s a painting of a man in a green robe with a cross on his left arm and a gold.