The first inhabitants that arrived in this place were the Aetas. They named this place Dadda, from the word Dap-Dap. Dad-Dap is a kind of tree that grows abundantly in this place -Ilocanos called it ‘bagbag‘. Although Dap- Dap is not the registered name of this Barangay it is the popular name to the people living in this barangay. But when the Spaniards came to this barangay they call it Dadda to shorten the word Dap-Dap. So Dadda is now the registered name of the barangay.

Dadda is a part of the 3rd district of Cagayan. It is one of the most remote Barangay found on the eastern part of the Municipality of Amulung. It is near to the forest where we found natural resoureces. Its distance from the National Road is 3.5  KM. It has a total land area of 794 hectares including forest areas and comprises of seven Zones namely: Zone 1-Sitio Bitbit taog, Zone 2- Burubur, located at the north western part, Zone 3 and 4 is purok Santol located at the center part Zone 5 at the southern part, and Zone 6and 7 at the Eastern part.

Adjacent barangays are Barangay Baculud on the west, Barangay Gangauan on the south, Barangay Magogod on the north and forest on the Eastern part.

This is the brief history of Barangay Dadda.