Before World War 2 and about 15 years after, the three provinces of Davao, Davao del Norte, Davao del Sur, and Davao Oriental, remained one political provincial unit, governed by one Governor. They comprised also one Diocese, run by one Diocesan Bishop, initiated by the PME Fathers. In the early years of the seminary, there was only one political Province and one Diocese. This was until the three provincial and diocesan divisions in the sixties.