Crowther records the 20th Atta of Igala at Idah

Samuel Ajayi Crowther was informed in 1854 at Idah that the reigning Atta was the twentieth in line, implying (the book notes) that the present (1970) Atta should be the thirty-first rather than a lower number on the surviving kinglist. This documentary checkpoint helps expose gaps in the Igala dynastic record.