Ga’a was a notorious kingmaker and kingslayer in the old Oyo empire. Bolanle Austen-Peters’ new Netflix film, House of Ga’a, has sparked interest in the real-life inspiration for the story — Ga’a, an 18th-century political figure who remote-controlled the affairs of the old Oyo empire.As previously seen in Bashorun Ga’a, an Adebayo Faleti film about the same subject released decades ago, House of Ga’a offers a cinematic window into the life of a megalomaniac who rained terror on his enemies. His military exploits earned him the coveted bashorun position, and he wielded its influence to become …