(Θήρας), a son of Antesion, grandson of Tisamenus, who led Lacedaemonians and Minyans of Lemnos (i. e. descendants of the Argonauts by Lemnian women) from Sparta to the island of Thera, which had before been called Callisto, but was now named after him Thera. (Hdt. 4.147; Paus. 3.1.6, 4.3.3, 7.2.2; Apollon. 4.1764; Schol. ad Pind. Pyth. 4.88.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890