Koleoso, who was 86, breathed his last on Monday.
Chief Koleoso has been described as a patriotic elder statesman, who has made immeasurable contributions to the development of Oyo State.
He was elected unopposed as a Councilor in the Ifedapo Local Government Area of the Old Oyo state in 1976.
In 1979, he was elected a member of the State House of Assembly representing Ifedapo Constituency on the platform of the Chief Obafemi Awolowo-led Unity Party of Nigeria (UPN).
The late erstwhile governor of Oyo State, Chief Bola Ige, later appointed him a Commissioner in the State Executive Council.