Barangay Gregorio, is one of the Barangays of Trece Martires City has been named in honor of Maximo Gregorio, one of the martyrs sentenced to death by the Council of War during the Spanish Regime on September 11, 1896 and were executed the following day. Barangay Gregorio was given its name upon the approval of Republic Act 981 on May 24, 1954.