Daasebre Nana Osei Bonsu II, also known as Saint Oswald Gyimah-Kessie (born 31 December 1939) served as the regent of the Kingdom of Ashanti from 25 February 1999 to 26 April 1999. Osei Bonsu II is the Mamponghene (Dukeof the Ashanti-Mampong Municipality).