So much, then, for the several parts of Thessaly. But speaking of it as a whole, I may say that in earlier times it was called Pyrrhaea, after Pyrrha the wife of Deucalion, and Haemonia after Haemon, and Thessaly after Thessalus the son of Haemon. But some writers, dividing it into two parts, say that Deucalion obtained the portion towards the south and called it Pandora after his mother, and that the other part fell to Haemon, after whom it was called Haemonia, but that the former name was changed to Hellas, after Hellen the son of Deucalion, and the latter to Thessaly, after the son of Haemon. Some, however, say that descendants of Antiphus and Pheidippus, the sons of Thessalus the son of Heracles, invaded the country from Thesprotian Ephyra and named it after Thessalus, their own ancestor. And it has been said that the country too was once named Nessonis, like the lake, after Nesson the son of Thessalus.