Can I give you a quick outline of who Maglor is? Let’s see…
The second son of the great Elven-smith Fëanor. He was one of the greatest poets and bards of the Elves, and a great soldier who ended up swearing a very badly-worded oath (to regain the Silmarils, three marvelous jewels made by his father) which eventually drove him into attacking his own people (several times) in a very tragic manner. One of these attacks ends up with him accidentally taking in Elrond (yes, that Elrond from Lord of the Rings) as a small child, and bringing him up. At the end of the story, Maglor wanders off along the beach, mourning for his lost family and all the innocent elves he killed in pursuit of his oath and the Silmarils.
So, in this painting, here he is standing sadly on the beach. The star of the House of Fëanor is shown either side of the painting, to represent his family and also the Silmarils which shone like stars. On the left is a harp, to symbolise his skill as a bard, and on the right a burnt hand, because by the time he regained the Silmarils, he had done such terrible deeds that the holy jewels burned his hand.
