*IBUSA AGE-GRADE (OTU-OGBOR) SYSTEM*
1. Ogbor Umunna (1923-1925)
2. Tax/Dokita (1926-1930)
3. Ukwuu (1931-1933)
4. Aho Mmili Li Umuaka Ibusa (1934-1936)
5. Ikpe Ogboli (1937-1939)
6. Aya Jamani (1930-1942)
7. Aho Nnukor (1943-1945)
8. Aho Chi Ji Eshishe Ji (1946-1948)
9. Umejei Transport (1949-1951)
10. Nche Onwuachi (1952-1954)
11. Town Hall (1955-1957)
12. Nwaezeapu (1958-1959)
13. Independence (1960-1962)
14. Midwest State (1963-1965)
15. Mbido Aya Biafra (1966-1968)
16. Osor Aya (1969-1971)
17. Unor Ogwu (1972-1974)
18. Ego Naira (1975-1977)
19. Kobo e-Dey (1978-1980)
20. Olinzelle Mpukor (1981-1983)
21. Nsogbu CEC Lagos (1984-1986)
22. Nkewa ICDU (1987-1989)
23. Okike Delta State (1990-1992)
24. Obi Mgbodo (1993-1994)
25. Ogbor Obuzor (1995-1997)
26. Minister Olisemeka (1998-2000)
