Portrait of a Venetian Titian (Tiziano Vecellio) (1488/90-1576)

The picture has something of this: people, portrait, man, facial hair, wear, leader, sit, writer, god, outerwear, veil, mustache, two.
Perhaps it’s a painting of a man sitting at a desk with a book and a pen in his left hand and a window in the background with a castle.