Peithon (son of Agenor)
Peithon, son of Agenor (died 312 BCE) was an officer in the expedition of Alexander the Great to India, who became satrap of the Indus from 325 to 316 BCE, and then satrap of Babylon, from 316 to 312 BCE, until he died at the Battle of Gaza in 312 BCE.
Satrap of the Indus (325-316 BCE)
After these deeds, Alexander named him viceroy of the Indus area, around 325 BCE, to the east of the territory held in the Paropamisadae by the satrap Oxyartes and to the south of the territories where Philip, son of Machatas was satrap:
- "He (Alexander) appointed Peithon viceroy of the land extending from the confluence of the Indus and Acesines as far as the sea, together with all the coast-land of India" Arrian Anabasis Book 6b 
Later, Peithon managed putting down the revolt of king Musicanus (Indian: Mûshika) at the head of the Indus:
- "Meantime he was informed that Musicanus had revolted. He dispatched the viceroy, Peithon, son of Agenor, with a sufficient army against him, while he himself marched against the cities which had been put under the rule of Musicanus. Some of these he razed to the ground, reducing the inhabitants to slavery; and into others he introduced garrisons and fortified the citadels. After accomplishing this, he returned to the camp and fleet. By this time Musicanus had been captured by Peithon, who was bringing him to Alexander." Arrian Anabasis Book 6b 
Peithon was confirmed in his position at the Partition of Babylon following the death of Alexander in 323 BCE:
- "To the colonies settled in India, Python, the son of Agenor, was sent." Justin XIII.4 
- "The country of the Parapamisians was bestowed upon Oxyartes, the father of Roxane; and the skirts of India adjacent to Mount Parapamisus, on Peithon the son of Agenor. As to the countries beyond that, those on the river Indus, with the city Patala (the capital of that part of India) were assigned to Porus. Those upon the Hydaspes, to Taxiles the Indian." Arrian "Anabasis, the Events after Alexander"
According to other sources, he was also at one point satrap of the Punjab.
In 317 BCE, another Peithon, the satrap of Media, tried to control the eastern rulers of the Empire. Macedonians troops from India were sent west to combat him, weakening the Greek positions in India. Peithon, son of Agenor, left India in 316 BCE for Babylon (Diod. XIX, 56, 4).
About that time, Chandragupta Maurya began reconquering the northwestern territories held by the Greeks.
Satrap of Babylon (315-312 BCE)
In 315 BCE, Peithon, son of Agenor, was named satrap of Babylonia by Antigonus Monophthalmus, and participated on his side in his fight against Cassander and Ptolemy in 314 BCE. Peithon was together with Nearchus, a former admiral of Alexander, assisting Demetrius, the son of Antigonus. At the Battle of Gaza in autumn 312 BCE, the Egyptian side under Ptolemy won, and Peithon was killed in action.
It is unknown what happened in India right after his departure, but ancient sources reported that the prefects of Greek territories were assassinated in the Indian uprisings led by Chandragupta Maurya:
- "India, after the death of Alexander, had assassinated his prefects, as if shaking the burden of servitude. The author of this liberation was Sandracottos (Chandragupta), but he had transformed liberation in servitude after victory, since, after taking the throne, he himself oppressed the very people he has liberated from foreign domination" Justin XV.4.12-13 
- Arrian Anabasis Book 6b
- Justin XIII.4
- "(Transitum deinde in Indiam fecit), quae post mortem Alexandri, ueluti ceruicibus iugo seruitutis excusso, praefectos eius occiderat. Auctor libertatis Sandrocottus fuerat, sed titulum libertatis post uictoriam in seruitutem uerterat ; 14 siquidem occupato regno populum quem ab externa dominatione uindicauerat ipse seruitio premebat." Justin XV.4.12-13