Callistus Valentine Onaga is the fifth child of Vincent and Victoria Onaga. His mother was the granddaughter of the Paramount Ruler Chief Chukwuani (died 1930) from Ozalla, Nkanu West Local Government Area, Enugu State, Nigeria. Onaga attended St Anthony’s Primary School, Agbudu, Nigeria, from 1964 to 1972. He received his secondary education at the Sacred Heart Seminary in Nsude, Nigeria, from 1973 to 1975. He earned his Bachelor of Divinity degree in Sacred Theology from the Urban University in Rome in 1987,[3] and was ordained to the priesthood on August 8, 1987.[1] Within the diocese, Onaga held several positions, including pastor at St. Mary’s Church in Enugu, Vicar General, Administrator of Holy Ghost Cathedral, and committee chairman for the inauguration of the Diocese of Awgu.[3][4]
Academic offerings include 95 majors, 86 minors, and more than 100 in-major specializations
