History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
for Endius was called
the son of Alcibiades.However, the Lacedaemonians first sent to Chios Phrynis, one of the Perioeci, to ascertain whether they had as many ships as they said, and whether their city corresponded with the representations of its high character: and when he brought them word back that what they heard was true, they straightway took the Chians and Erythraeans into alliance, and resolved to send them forty ships, as there were already there (according to the statement of the Chians) not less than sixty.