Sophagasenus is probably derived from the name Shubhagasena.
Polybius on Sophagasenus
, the Greek historian, makes reference to Sophagasenus in context with Antiochus III's expedition across the Caucasus Indicus in around 206 BCE. Having crossed the Caucasus Mountains, Antiochus moved up to Kabul and met Sophagasenus the Indian king with whom he renewed league and friendship he had made previously. and received more elephants until he had one hundred and fifty of them all together. He then returned home viaArachosia, Drangiana and Karmania. No other source except Polybius makes any reference to Sophagasenus.