Castle of Kerglas by DanaMartin
This painting is based off a character from The Castle of Kerglas, from Emile Souvestre's Le Foyer Breton, which was collected into the Lilac Fairy Book. The story follows a dim young man called Peronnik on his quest to steal some objects from the magician of Kerglas. Just before he reaches the castle, he encounters a mysterious woman in a black satin dress. Peronnik thinks she's Moorish later she tells him that she can kill the magician for Peronnik with a touch of her finger because, she says simply, she is the plague.