Gadates

Gadatas was a 6th-century BC Assyrian provencial governor (or satrap) who, according to Xenophon's Cyropaedia, defected to Cyrus the Great. His defection was motivated by a desire for revenge; the Assyrian king had made him a eunuch because one of the king's concubines had shown romantic interest in him, owing to his good looks.

Gadatas had helped Cyrus by secretly handing over a strategically important fortress. In response, the Assyrian king, Nabonidus, invaded Gadatas' province. Cyrus quickly came to his aid and rescued Gadatas and his troops.