Gloria, officially the Municipality of Gloria (), is a 3rd class municipality in the province of Oriental Mindoro, Philippines. According to the 2020 census, it has a population of 50,496 people. The town was previously a barangay called Maligaya, the largest barangay during the administration of President Diosdado Macapagal. Local politicians, led by former guerrilla chief Nicolas Jamilla, Sr., battled for the conversion of Maligaya into a new town. They renamed it after the ten-year-old daughter of the President, Gloria Macapagal Arroyo, who later on herself became the fourteenth President in 2001. Jamilla became the first mayor of the town, which kept the old name "Maligaya" as the name of a barangay in the poblacion. History Gloria was once part of the municipality of Pinamalayan. In 1915, migrant families from Marinduque settled in Barrio Tambong, and in 1930, when a national road was built through Pinamalayan, they moved west and occupied the area along this road. Tambong was later divided into two barrios: the first retained the original name, while the second was called Maligaya (meaning "happy"), alluding to the settlers' happiness at the bountiful yield of their agricultural crops. The residents of 25 barrios (Maligaya, Kawit, Malusak, Balite, Dalagan, Tinalunan, Calamundingan, Bulbogan, Langang, Banus, Agus, Batingan, Papandungin, Malamig, Tubag, Malayong, Malubay, Mirayan, Guimbonan, Agsalin, Manguyang, Banutan, Boong-Lupa, Tambong and Maragooc) grouped together and petitioned for the separation of their barrios from the municipality of Pinamalayan. The petition was granted on October 1, 1964, through Executive Order No. 117 issued by President Diosdado Macapagal. Executive Order No. 140, issued on February 25, 1965, by the same President, defined and fixed the boundaries of Gloria as a new municipality. On December 24, 1965, however, the Supreme Court nullified its status as a municipality. Gloria was finally recognized as a distinct municipality on June 9, 1966, when Housebill No. 6107, sponsored by Congressman Luciano Joson, was enacted into law. (It later became known as RA 4651.) The new municipality was named Gloria, primarily as a token of gratitude to President Macapagal, whose daughter is named Gloria, and secondarily from the word "glory", celebrating the settlers' "glorious" life in Barrio Maligaya. Barrio Maligaya later became the poblacion and the official seat of the municipal government. Nicolas M. Jamilla Sr. was appointed first Mayor of Gloria by President Diosdado Macapagal, serving from 1964 to 1967. He then ran in the local election of 1967