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 was derived from Datu Pangil's three daughters. After they were baptized, they were named Maria Basilisa, Maria Angela, and Maria Elena. The first letters of Basilisa, Angela, Elena were taken together and read "Bae". Over a period of time, "Bae" became "Bay". The powerful Gat Pangil was Datu of this already thriving community in 1571 when 18-year-old Spanish Capitan Juan de Salcedo landed with Augustinian missionaries Alfonso de Alvarado and Diego Espinar came to claim the territories for Spain. It was salcedo who took the name of the town and named the lake after it – Laguna de Bay (the