Philip III, Arrhidaeus.
The sudden and unexpected death of Alexander at Babylon in June, 323 BC created a power vacuum which none of the great king’s generals had sufficient authority to fill. For the time being a compromised settlement was reached. Arrhidaeus, Alexander’s half-brother was to share the throne with Alexander IV, the infant son of the late king born after his father’s death. Thus the real power still lay with the generals. After six years of rule, Arrhidaeus was murdered by Alexander the Greats mother.