 In the beginning of 261 , Fulvius Macrianus headed to Europe accompanied by Macrianus Minor leaving Quietus and Balista in Emesa . Odaenathus ' whereabouts during this episode are not clear ; he could have distributed the army in garrisons along the frontier or might have brought it back to his capital . The Palmyrene monarch seems to have waited until the situation clear , declaring loyalty neither to Fulvius Macrianus nor to Gallienus . In the spring of 261 , Fulvius Macrianus arrived in the Balkans but was defeated and killed along with Macrianus Minor ; Odaenathus then marched on Emesa where Quietus and Balista were staying . The <unk> killed Quietus as Odaenathus approached the city , while Balista was captured and executed by the king in autumn 261 . 
