 4867 on 8 May 1967 split the old Davao Province into Davao del Norte, Davao del Sur and Davao Oriental, and providing each new province a congressional district.The last representative of the undivided Davao Province, Rep. Lorenzo Sarmiento, began to solely serve as the representative of his chosen successor province (Davao del Norte) in the second half of the 6th Congress, per Section 4 of R.A. 4867.The first representatives of Davao del Sur (including Davao City) and Davao Oriental also began to serve their new provinces in the second half of the 6th Congress.