Alaafin Abiodun of Oyo

Alaafin Abiodun Adegoolu was born around 1730 in Oyo-Ile, the capital of the Oyo Empire — the Yoruba imperial state that dominated the lower Niger region of what is now southwestern Nigeria, Benin, and Togo from the seventeenth through the late eighteenth centuries. He acceded to the Alaafin throne in approximately 1770.

His reign of approximately nineteen years (1770-1789) is conventionally regarded as the period of greatest territorial extent and economic prosperity of the Oyo Empire. Oyo at his accession had become the dominant West African slave-supplying power of the trans-Atlantic trade — the Egba, Egbado, Awori, Mahi, and Dahomean territories were under Oyo tributary control; Oyo cavalry and the ilari (royal messengers) operated freely from the Niger River south to the coast.

Abiodun engineered the political consolidation of the Oyo Mesi — the council of seven kingmakers who had constrained successive Alaafin since the seventeenth century. He overthrew the Bashorun Gaha — the principal Oyo Mesi figure of the preceding generation, who had effectively held the political authority of the Alaafinship in trust through four successive Alaafin — in 1774. The killing of Gaha and his sons reasserted Alaafin authority over the Oyo Mesi and the imperial provinces.

His decision to maintain the trans-Atlantic slave-trade volumes through the late 1780s — at the moment when the British abolitionist movement was producing the parliamentary debate that would close the British slave trade in 1807 — produced both substantial royal revenue and the conditions that would, in the generation after Abiodun's death, collapse the Oyo Empire. The slave-trade dependence had drained the Oyo agricultural labor force; the Fulani jihad of Usman dan Fodio (also placed in this archive) was gathering strength to the north.

Abiodun died around 1789. The Oyo Empire collapsed within forty years of his death.

He is honored here as the last Alaafin of the imperial Oyo.