On 3 March 1995,
Pope John Paul II created the Roman Catholic Diocese of Konongo-Mampong by taking territory from the dioceses of Kumasi and Sunyani. The Holy Father appointed Father Joseph Osei-Bonsu, a member of the clergy of Kumasi as the pioneer bishop of the new diocese effective that day. He was consecrated bishop at Independence Square, Accra, Archdiocese of Accra on 28 May 1995 by the hands of
Jozef Cardinal Tomko, Cardinal-Deacon of Gesù Buon Pastore alla Montagnola assisted by Bishop
Francis Anani Kofi Lodonu, Bishop of Ho and Archbishop
Gregory Eebolawola Kpiebaya, Archbishop of Tamale. On 21 March 2024,
Pope Francis accepted the age-related resignation from the pastoral care of the diocese of Konongo-Mampong, Ghana, presented by Bishop Joseph Osei-Bonsu. The Holy Father appointed the Monsignor Father
John Opoku-Agyemang, previously a member of the clergy of Konongo-Mampong, Ghana, as the new bishop of the same diocese. Bishop Joseph Osei-Bonsu served as
Apostolic administrator of the Diocese of Konongo-Mampong from the he retired until the day his successor was consecrated. ==See also==