E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A corruption of Ulyssippo (Ulysses polis or city). Said by some to have been founded by Lusus, who visited Portugal with Ulysses, whence Lusitania (q.v.); and by others to have been founded by Ulysses himself This is Camoens version. (See above.)