Born on Friday, October 5, 1951 in Iruekpen in the present day Esan West Local Government Area of Edo State to Mr. Abraham A. Osunbor, a retired teacher and politician and Dame Felicia E. Osunbor, a retired teacher.
On May 29, 2007, PDP produced Prof. Oserheimen Osunbor as the governor of Edo state. He served as the Civilian Governor of the state from May 29, 2007 to November 11, 2008 after the court nullified his election. He was elected as governor on April on the PDP platform. On March 2008, the Edo State Governorship Election Tribunal declared that Osubor’s election was invalid, and asked the Independent National Electoral Commission (INEC) to withdraw his certificate and decleared Adams Aliyu Oshiomhole of the Action Congress (AC) Party the winner. On November 11, 2008, a Federal Appeal Court sitting in Benin City upheld the ruling of the state’s election petitions tribunal, declaring Oshiomhole to be the governor of Edo state. The decision was based on several voting irregularities.
Prof. Osunbor is married with many children.