History of Abra

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The first inhabitants of Abra were the ancestors  of the Bontocs and the Ifugaos. These inhabitants eventually left to settle in the old Mountain Province. Other early inhabitants were the Tingguians, or Itnegs, as they are also known. The Ilocos came to trade with the tinguians but eventually they saw the province to be very good so they invaded and the tinguians were forced to go to the mountains.

In 1598 a Spanish garrison was established in Bangued to protect the Ilocanos who converted to Christianity from Tingguian raids. During the British Occupation of the Philippines, Gabriela Silang and her army fled to Abra from Ilocos and continued the revolt begun by her slain husband, Diego Silang. She was captured and hung by the Spanish in 1763. 

In 1818 the Ilocos region, including Abra, was divided into Ilocos Norte and Ilocos Sur. In 1846 Abra was created as a political-military province with Lepanto as a sub-province. It remained so until the arrival of the Americans in 1899.

In 1908 the Philippine Commission once again in annexed Abra to Ilocos Sur in an attempt to resolve Abra's financial difficulties. But on March 9, 1917, the Philippine Assembly re-established Abra as a province.

In 1942, the Japanese forces occupied the Philippines and entered Abra.

In 1945, the liberation in Abra in Northern Luzon by the Philippine Commonwealth forces and the local Cordilleran guerrillas against the Japanese during the Battle of Abra at the end the Second World War.

The revolutionary Marxist priest, Conrado Balweg, who fought for the rights of the Cordillera tribes, began his crusade in Abra. After successfully negotiating a peace accord with Balweg's group in 1987, the Philippine government created the Cordillera Administrative Region, which includes Abra.