The town used to be a barrio in Calbayog named Magsohong, but on June 29, 1878, the principalía of Magsohong, petitioned the Gobierno Superior to establish Magsohong as an independent pueblo. They argued that Magsohong was four hours away from Calbayog, it already had a casa real or a Juzgado de Paz of nipa, a church with a techada (roof) of nipa; a convent; an escuela also made of wood and nipa; and had more than 300 tributos. The petition was endorsed by the cura parroco, the Gobernadorcillo as well as the principalía of Calbayog. Fourteen years later, Royal Decree No. 25 dated September 25, 1892 approved the establishment of the pueblo of Magsohong renamed Sta. Margarita. The new pueblo had three visitas: Balud, San Bernardo, and Londara. However, it remained under the parish of Calbayog.
July 25 (Alimango Festival) - this dance festival revolves around the courtship between the female alimango (mud crabs found in fishponds) Atabayi and the male Amamakhao. It also depicts the capture of the alimango with the use of the bobo[disambiguation needed] and giant bentol. Dancers, dressed as alimango, flex their hands as if to bite. Snare drums and talutang highlight the fast rhythm of the dance.