Odaenathus

Odaenathus, king of Palmyra, organized a successful defense of the Roman eastern provinces after Emperor Valerian was captured by the Sassanid king Shapur I. He defeated the Sassanid forces, drove them back across the Euphrates, and restored Roman authority in Syria and Mesopotamia.

Odaenathus launched a major campaign against the Sassanid Empire, recapturing the cities of Nisibis and Carrhae. He besieged the Sassanid capital of Ctesiphon but was unable to take it. His victories secured the Roman eastern frontier and earned him the title of Corrector Totius Orientis.

Odaenathus was assassinated along with his eldest son Herodianus at Emesa, allegedly on the orders of his wife Zenobia or his nephew Maeonius. His death created a power vacuum that allowed Zenobia to take control of Palmyra and expand the Palmyrene Empire.