History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
As the two sets of envoys, those from Pharnabazus and those from Tissaphernes, were negotiating these matters separately, there was much rivalry among the people of Lacedaemon, one side trying to persuade the people to send ships and troops to Ionia and Chios first, the other to the Hellespont.
The Lacedaemonians, however, were by far more inclined to accept the proposals of the Chians and Tissaphernes. For Alcibiades was cooperating with them, being an hereditary friend of the ephor Endius and on the most intimate terms with him. (This was, in fact, the reason why their house had acquired its Laconian name; for Endius was called Endius son of Alcibiades).[*](The proof that Alcibiades was a Laconian name: it was borne by alternate generations in the family of Endius. Cleinias, Alcibiades' great-grandfather, determined that in his family also the name Alcibiades should alternate with his own name.)
But in spite of their inclination, the Lacedaemonians first sent Phrynis, one of the Perioeci, to Chios to see whether the Chians had as many ships as they claimed, and whether in other respects the power of the city was equal to the representations made. When he brought back word that what they had heard was true, they at once made the Chians and the Erythraeans allies, and voted to send them forty ships, there being, from what the Chians said, no fewer than sixty already there.
And at first they were going to send them ten of these under the command of Melanchridas, who was their admiral; but afterwards, when an earthquake occurred, instead of Melanchridas they sent Chalcideus, and instead of ten ships they made ready five in Laconia. So the winter ended, and with it the nineteenth year of the war of which Thucydides wrote the history.