Another story is also believed that there were two Dumagat brothers named Ding and Allan who were hunting animals in the forest.

In the early 1900s, settlers from Quezon, Nueva Ecija, and Ilocos started to migrate to Dingalan.

Soon after, inter-marriages among Tagalogs, Ilocanos, Pampangos (Kapampangans), and Bicolanos enriched the cultural stock of settlers.

The strategic location of Dingalan Bay for military purposes was rediscovered after the RP-US Mutual Defense Treaty of 1951, when the municipality became the Training Ground in 1957 for the South East Asia Treaty Organization (SEATO) as well as the United States Seventh Fleet.

Dingalan was recognized as a municipal district on June 16, 1956 under Republic Act 1536 with an initial population of 2,000 residents.

Prior to that, Dingalan was merely a sitio of Barrio San Luis, Municipality of Baler, Tayabas (now Quezon) Province.

They obtained a combined allowable cut of 169,416 cubic meters of lumber per annum, roughly equivalent to 4,500 fully loaded ten-wheeler trucks each year.

The brownish color of Dingalan’s river channels reveals the extent of soil erosion and siltation resulting from the loss of adequate tree cover upstream.

Further south of the town proper are the barangays of Aplaya, Butas na Bato, Matawe, Ibona, Dikapanikian and Umiray.