Deiotarus ruled Galatia as a client king under Roman patronage, his position cemented after siding with Pompey — a choice that became politically catastrophic following Pharsalus in 48 BC. Caesar pardoned him but stripped territory; Mark Antony later restored much of it. He was also the subject of Cicero's only surviving speech delivered before a monarch, *Pro Rege Deiotaro*, in which Cicero defended him against charges of attempted assassination brought by his own grandson.
He died in 40 BC at an advanced age, reportedly having executed that same grandson himself.
Deiotarus ruled Galatia as a client king under Roman patronage, his position cemented after siding with Pompey — a choice that became politically catastrophic following Pharsalus in 48 BC. Caesar pardoned him but stripped territory; Mark Antony later restored much of it. He was also the subject of Cicero's only surviving speech delivered before a monarch, *Pro Rege Deiotaro*, in which Cicero defended him against charges of attempted assassination brought by his own grandson.
He died in 40 BC at an advanced age, reportedly having executed that same grandson himself.