Analysis of information sources in references of the Wikipedia article "Lal-lo" in English language version.
The City of Nueva Segovia, at the mouth of the Cagayan, was founded in the governorship of Ronquillo, when the valley of the Cagayan was first occupied and the Japanese colonists, who had settled there, were expelled. It had at the beginning of the seventeenth century two hundred Spaniards, living in houses of wood. There was a fort of stone, where some artillery was mounted. Besides the two hundred Spanish inhabitants there were one hundred regular Spanish soldiers, with their officers and the alcalde mayor of the province. Nueva Segovia was also the seat of a bishopric which included all northern Luzon. The importance of the then promising city has long ago disappeared, and the pueblo of Lallo, which marks its site, is an insignificant native town.