E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Prospero.
Rightful Duke of Milan, deposed by his brother. Drifted on a desert island, he practised magic, and raised a tempest in which his brother was shipwrecked. Ultimately Prospero broke his wand, and his daughter married the son of the King of Naples. (Shakespeare: Tempest.)