The Yoni Chiefdom is a Chiefdom of Sierra Leone located in Tonkolili District, Northern Province, Sierra Leone.
[1] It is centred on Yonibana and the Yoni people are part of the Temne ethnic group.
Francis de Winton led the British Yoni Expedition against the Yoni Chiefdom following a number of disputes with the British allies in the area.
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