San Agustin Parish Church (Bay, Laguna) San Agustin Parish Church (Bay, Laguna) St. Augustine Parish Church (Filipino: "Simbahan at Parokya ni San Agustin") is the only Augustinian Roman Catholic church in Bay, Laguna, in the Philippines. The church was first administered by Augustinians friars and later transferred to the Franciscans. The current parish priest is Reverend Father John F. Tabot. It is historically considered as the oldest Roman Catholic church in the Province of Laguna upon the early conquest and establishment of La Laguna. The first church of Bay was constructed made of light material of bamboo and nipa by the first ever catholic missionaries in
Bay, Laguna Island that Bay was organized both as a town and a parish with Fray Juan Gallegos as the parish priest. On the same day, the village of Sampaloc (now San Pablo) was made a visita of the lake side village where it was believed that the tribunal of Ecclesiastical visitors of Bay was held. Fray Gaspar de San Agustin further wrote that in 1586, the Agustinian Fathers organized the visita into a convent with a priest. The provincial Father Diego Alvarez to handle the administration of the Christian natives. Thus Sampaloc which came to be known as San Pablo de