E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Fortunatus.
You have found Fortunatuss purse. Are in lucks way. The nursery tale of Fortunatus records that he had an inexhaustible purse. It is from the Italian fairy tales of Straparola, called Nights. Translated into French in 1585. (See WISHING CUP.)