Abra's inhabitants are mostly descendants of Ilocano settlers and members of the Tingguian tribe. The predominant languages being Ilocano and Itneg.
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 the Itnegs as they are also known.Gabriela was captured and hung by the Spanish in September of the same year, she was 32 years of age. Ilocos Sur's provincial hospital is named Gabriela Silang General Hospital in her memory
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. 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 Abra. The Allied Philippine Commonwealth forces along with local guerrillas liberated Abra after a decisive victory over the Japanese in 1945 during the Battle of Abra.




