[1] Phthius became the father of Amphictyone who bore to Asterius a son, Dotius (Dotis).
[2][3] Phthius together with his brothers, left Achaean Argos with a Pelasgian contingent for Thessaly.
The only single source of the accounts of Phthius is recounted by Dionysius of Halicarnassus in his Roman Antiquities about the Pelasgian race's migration.
[1] “In the sixth generation afterwards, leaving the Peloponnesus, they [Pelasgians] removed to the country which was then called Haemonia and now Thessaly.
When they arrived in Haemonia they drove out the barbarian inhabitants and divided the country into three parts, calling them, after the names of their leaders, Phthiotis, Achaia and Pelasgiotis.” This article relating to Greek mythology is a stub.