Daasebre Osei Bonsu II, known in private life as Saint Oswald Gyimah-Kessie, was born on December 31, 1939. His mother was Teacher Mary Gyimah (one of the pioneer women educationists in the Gold Coast and pre-independence era) of the Botaase Bretuo Royal Family of Asante-Mampong.
Daasebre Osei Bonsu ll was enstooled as Mamponghene on August 25, 1996 after his predecessor Nana Atakora Amaniampong abdicated the stool.
He is the occupant of the Silver stool, second in command to the golden stool of Asanteman. He’s also the ‘Nwisiahene’ of the Asante Kingdom. Hence, he acts as the caretaker of the Asante kingdom in the absence of the king. On 31st December, 2021 Daasebre Osei Bonus II will celebrate 25th anniversary on the enstoolment as the Paramount chief of Asante Mampong and his 83rd birthday lunch.