This magnet pictures an illustration by HJ Ford from the late 1800s. It appeared in The Orange Fairy Tale Book by Andrew Lang accompanying a Danish story, The Magic Book.
In this illustration the princess is shown imprisoned by her father for preferring the company of her shapeshifter boyfriend to that of royal suitors. Spoiler: she escapes through a hole in the floor :)
Andrew Lang (1844 - 1912) was a Scottish poet, novelist, literary critic, Homeric scholar and historian. He is best known for folklore anthologies, particularly for 12 Fairy Tale Books published from 1889 to 1910.
British artists Henry Justice Ford (1860–1941) and Lancelot Speed (1860-1931) became famous as illustrators of Lang’s Fairy books.