(Another translation & definition of sigod is "soon" or "early") Another legend says that if an unmarried stranger comes to the place, he unavoidably falls in love and marries and most of the time stays for good.Prior to their arrival, early settlers were the Dumagats, Aetas, and Bugkalots followed by migrants from other parts of the Philippines.[6][7] In 1818, Nueva Ecija annexed the towns of Casiguran, as well as Baler, Infanta (formerly called Binangonan de Lampon) and Polillo Islands from Tayabas, and Palanan from Isabela.[further explanation needed] When the Philippines regained sovereignty in 1946, Aurora was still part of Tayabas and Casiguran was a lone northern town.In 1959 and 1966, the barrios of Dilasag and Dinalungan, which were part of Casiguran and situated on its northern and south-western portions, were made into municipalities.
An old map showing the current northern territory of Aurora as part of Nueva Vizcaya.