Paombong, Bulacan In the 16th century, the Spanish conquistadores expand their pacification drive in Luzon moving from one place to another. In 1578, they reached a large tract of land consisting of two sister towns. The newly discovered pueblo was then named Malolos. However, the Spanish friars also attended to the spiritual needs of the people living west of Malolos, which is later to be known as Paombong. This relationship continued until the early 17th century when the natives of Paombong manifested their desire to be liberated from the parochial leadership of Malolos. The Spaniards then established Paombong as a pueblo in 1619, becoming the seventh town in Bulacan founded by the Augustinian Order. From 1619 to 1650, a Spanish friar ruled Paombong, just like any other Augustinian-controlled place. Not long after, civilian rulers took over, but their reigns were dictated upon and was under the mercy of the prailles. In the middle of the 17th century, Paombong grew into a modest community from what was once a cogon land inhabited by a handful of Tagalogs. Paombong was created a municipal organization on November 28, 1650 with Agustin Mananghaya[4] as its first civilian ruler. During the Spanish regime, Paombong’s coastal area, more specifically, Barangays Masukol and Binakod, played a significant role in Philippine History being known encounter sites between Spanish soldiers and Katipuneros. General Isidoro Torres[5] used to retreat with his troops to Barangay Masukol and Barangay Binakod to avoid the advancing Spanish forces.[6] In the latter village, he organized the Katipunan militia of Paombong.[7] It is from these encounters, in fact, that Barangays Binakod and Masukol earned their present names. In one encounter, Binakod was where the enemies where "fenced in" (binakuran) and it was in Masukol where they were eventually "cornered" (nasukol) and defeated. In 1898, the first civilian in the person of Don Victorio de Leon headed the Municipal Government until 1900. The seat of the local government was first established at the ground floor of the Paombong Church Convent then popularly called "silong". It was later transferred to the house of Numeraino Lindayag located in Poblacion, then was transferred to the location of the present Rural Health Center I. Eventually it was moved to the place where it is presently located which since has been the seat of the Municipal Government since then. In 1941, the head of the Municipal Government was later on called Municipal Mayor. Local legend has it that the name "Paombong" was taken from the long bamboo tube called "bumbong" or "tukil" which is used for collecting nipa sap. The practice of extracting nipa sap with bumbongs made the town known as the town with many bumbongs.
The local people claimed that the Spaniards who first visited the place were so amused with the bumbong that, after learning its name from the natives, they named the town after the container, a name which later evolved to Paombong. Paombong is situated southwest of the province of Bulacan, with a total land area of 46.34 square kilometers. It is bounded by the municipality of Calumpit on the north, Malolos City on the east, municipality of Hagonoy on the west and Manila Bay on the south. The municipality is approximately 47 kilometers from Metro Manila, it is a by-pass town and can be accessed via North Luzon Expressway and MacArthur Highway.

Barangay San Isidro I cradle the largest "sasahan" in town, subdivided into 7 political sitio or "purok" (Sitio Uno, Gitna, Sitio Tres, Sitio Wawa, Sitio Pantay, Sito Gunao and Sitio Kulis ). It is also a political hot spot every election for National and Local Positions. The Fishport located at Sitio Wawa cradles the motor boats or "bangka" which serves as the major transportation going to the three barangays near the Manila Bay, namely, Sta. Cruz, Masukol and Binakod.