Loboc was an important inland town because it served as the marketplace where inhabitants of the inland towns Bohol could trade with the coastal towns. Besides the water borne raiders, Loboc may have been fortified to respond to the threat of people who lived in the hinterland. During the early 17th century and the 18th two major revolts erupted in Bohol—the Babaylan or Tamblot revolt and the Dagohoy revolt. In both instances, the rebels sought safety by fleeing inland. So an inland town like Loboc had to be defended in case of sudden incursions.
Warren reports that the fortification of Loboc consisted of a stone church; stone fort and stone baluarte. It is not clear who built the fortification but it was most likely the Jesuits who had already built a new church in Loboc completed in 1734 to replace one built earlier but had been burnt. The sites of the baluarte and fort are uncertain. However there are ruins behind the convento, which may have been remains of the fortification.
There is little data about the fortification that can give a specific year or date of its construction or that can positively identify the fortification.