Parallela minora

When Darius the Persian had fought with Alexander at the Granicus, and had lost seven satraps and five hundred and two scythe-bearing chariots, he intended to attack again on the next day. But Ariobarzanes, his son, who was kindly disposed toward Alexander, promised to betray his father. But the father fell into a rage and cut off his head. So Aretades of Cnidus in the third book of his Macedonian History.

Brutus, unanimously elected consul, drove into exile Tarquin the Proud, who was comporting himself despotically. Tarquin went to the Etruscans and began to wage war against the Romans. But Tarquini sons wished to betray their father. But they were detected, and Tarquin cut off their heads. So Aristeides the Milesian in his Italian History.