Strabo, Geography

A kind of hegemony is held over these places by Pergamum, which is a famous city and for a long time prospered along with the Attalic kings; indeed I must begin my next description here, and first I must show briefly the origin of the kings and the end to which they came. Now Pergamum was a treasure-hold of Lysimachus, the son of Agathocles, who was one of the successors of Alexander, and its people are settled on the very summit of the mountain; the mountain is cone-like and ends in a sharp peak. The custody of this stronghold and the treasure, which amounted to nine thousand talents, was entrusted to Philetaerus of Tieium, who was a eunuch from boyhood; for it came to pass at a certain burial, when a spectacle was being given at which many people were present, that the nurse who was carrying Philetaerus, still an infant, was caught in the crowd and pressed so hard that the child was incapacitated. He was a eunuch, therefore, but he was well trained and proved worthy of this trust. Now for a time he continued loyal to Lysimachus, but he had differences with Arsinoe, the wife of Lysimachus, who slandered him, and so he caused Pergamum to revolt, and governed it to suit the occasion, since he saw that it was ripe for a change; for Lysimachus, beset with domestic troubles, was forced to slay his son Agathocles, and Seleucus Nicator invaded his country and overthrew him, and then he himself was overthrown and treacherously murdered by Ptolemy Ceraunus. During these disorders the eunuch continued to be in charge of the fortress and to manage things through promises and courtesies in general, always catering to any man who was powerful or near at hand. At any rate, he continued lord of the stronghold and the treasure for twenty years.