The King and the Beggar-maid
"The King and the Beggar-maid" is a 16th-century broadside ballad that tells of an African king, Cophetua, and his love for the beggar Penelophon. Artists and writers have referenced the story, and King Cophetua has become a byword for "a man who falls in love with a woman instantly and proposes marriage immediately".
Source: Wikipedia — The King and the Beggar-maid (CC BY-SA 4.0)