Jen-jen Tanqui-on Fabillar

Jen-jen Tanqui-on Fabillar is the current Punong Barangay of Barangay San Isidro in Giporlos, Eastern Samar, Philippines, serving the 2023 - 2026 term. The position — also commonly referred to as Barangay Captain — is the elected head of the barangay's local government unit.

The Punong Barangay is the chief executive of the barangay, the smallest and most local unit of government in the Philippines. Duties under Section 389 of RA 7160 include enforcing barangay ordinances, organising and leading an emergency response team, calling and presiding over sessions of the Sangguniang Barangay, maintaining public order through the Lupong Tagapamayapa (peace council), and supervising the delivery of basic services to residents.

Barangay San Isidro is one of 18 barangays in the municipality of Giporlos, in the province of Eastern Samar, in the Eastern Visayas region of the Philippines. According to the 2020 Census of Population and Housing, Barangay San Isidro had a population of 867 residents — the constituency that Jen-jen serves as Punong Barangay. Eastern Samar is classified as a 2nd by the Bureau of Local Government Finance.

Barangay officials in the Philippines are elected during the synchronised Barangay and Sangguniang Kabataan Elections (BSKE). Jen-jen currently holds office under the mandate established by the October 30, 2023 BSKE. The next BSKE, at which this position will again be contested, is scheduled for Monday, November 2, 2026.

A Philippine barangay's Sangguniang Barangay is composed of one Punong Barangay, seven Sangguniang Barangay Members (kagawads), a Sangguniang Kabataan (SK) Chairperson representing the youth sector, a Barangay Secretary, and a Barangay Treasurer. Together, these officials administer the smallest unit of Philippine local government and deliver frontline services — from barangay clearance issuance to peace and order, from public health assistance to the barangay's share of the Internal Revenue Allotment.