The History of Old Oyo Empire by Johnson Okunade

His brother Ajaka was summoned to return to the throne.Ījaka remains the only Alaafin to rule twice.‎ Rather than abdicating, he hanged himself on a shea butter tree. He eventually became tyrannical and was asked to abdicate by the king makers and the senior chiefs. He was said to have the knowledge of some preparation by which he could attract lightning. He fought many battles and was fond of making charms. His seven years of reign was marked by his restlessness. Sango defeated many of the other Yoruba kings and expanded the Oyo kingdom. His mother was the daughter of Elempe, a Nupe king, who formed an alliance with Oranyan by giving him his daughter to wife. He had a habit of emitting fire and smoke out of his mouth, by which he greatly increased the dread his subjects had of him. Unlike his brother, he was of a wild and warlike disposition and he had a fiery temper. After the death of Sango, he returned to the throne. He went to Igboho where he remained in retirement for seven years. Being too mild to be warlike, and with the provincial kings encroaching on Oyo, he was deposed and replaced by his fearless and violent brother, Sango. Unlike his father, he was of a peaceful disposition, loved animal husbandry and encouraged it. An obelisk, called ‘Opa Oranmiyan’ was erected at the place where he was buried and is still there to this day.Ījaka was a calm and gentle king. He immediately returned to Ile Ife, where he eventually died and was buried. On returning, Oramiyan heard the kakaaki at the border (the kakaaki is only played for the king). Having stayed in Ile-Ife longer than necessary, the king makers made Ajaka king in Oyo. It says that Oranmiyan left for Ile-Ife, the land of his father, leaving Ajaka to rule as regent at Oyo. Some said he went further East, leaving his son, Ajaka in charge of Oyo, and stopping at a town called Oko, from where he could not proceed and so, died and was buried there.

The History of Old Oyo Empire by Johnson Okunade