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| YEAR | DATE | EVENT | GOVERNOR |
| 1849 | 30 june | UK Biafra protectorate | John Beecroft |
| 1854 | 10 june | James Lynslager | |
| 1855 | Thomas Joseph Hutchinson | ||
| 1861 | Richard Francis Burton | ||
| 1864 | december | Charles Livingstone | |
| 1873 | George Hartley | ||
| 1878 | David Hopkins | ||
| 1879 | 13 september | Edward Hyde Hewett | |
| 1891 | 1 january | Synge | |
| 1891 | 3 august | Sir Claude Maxwell MacDonald | |
| 1896 | 3 august | Sir Ralph Denham Rayment Moor (I) | |
| 1896 | november | Phillips | |
| 1897 | 4 january | Sir Ralph Denham Rayment Moor (II) |
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| YEAR | DATE | EVENT | GOVERNOR |
| 1899 | 27 august | UK Protectorate | |
| 1904 | august | Sir Walter Egerton |
| YEAR | DATE | EVENT | GOVERNOR |
| 1906 | 16 february | ||
| 1912 | Sir Frederick John Dealtry Lugard | ||
| 1914 | 1 january | Part of UK Nigeria colony |