Callistus Valentine Onaga
Callistus Valentine Onaga received on 8 August 1987, the ordination. Pope Benedict XVI. appointed him on February 9, 2009 for the Bishop of Enugu.
He received his episcopal consecration of the Apostolic Nuncio in Nigeria, Renzo Fratini, on 2 May of the same year; Were co-consecrators Valerian Okeke, Archbishop of Onitsha, and Anthony Okonkwo Gbuji, Bishop Emeritus of Enugu.