Dorus was, of course, the father of the Dorians; and Xuthus had a son, called Iôn, who was the father of the Ionians.  But, besides all these, there was a story of two brothers, named Ægyptus and Danaus, one of whom settled in Egypt, and the other in Argos.  One had fifty sons and the other fifty daughters, and Ægyptus decreed that they should all marry; but Danaus and his daughters hated their cousins, and the father gave each bride a dagger, with which she stabbed her bridegroom.  Only one had pity, and though the other forty-nine were not punished here, yet, when they died and went to Tartarus, they did not escape, but were obliged to be for ever trying to carry water in bottomless vessels.  The people of Argos called themselves Danai, and no doubt some of them came from Egypt.