Aspar's main opponent at court was Zeno, an Isaurian who in AD 469 was made 'Master of Soldiers'.
It was in AD 470 when Zeno was in Thrace fighting the Huns that Aspar used his opponent's absence to persuade Leo to grant his son Patricius the long promised rank of Caesar as well as marriage to Leo's daughter Leontia.
Aspar and his son and general Ardaburius needed to flee into the safety of a church, so fierce was the backlash brought about by Zeno's return.