[2] Sideia Island was sighted by Europeans when the Spanish expedition of Luís Vaez de Torres arrived on 18 July 1606.

The mission in that island was established on April 22, 1932, by the Australian Province of the French Congregation Missionaries of the Sacred Heart (MSC).

Many facilities were set up to provide education, medical assistance and ways of living to the native of the area.

The island of Sideia is quite near Alotau and can be reached in less than three hours by motor boat.

The other villages: Lamoasi, Mwalotakilili, Dumalawe, Paka, Gugui, Gadogadowa, Oba, Memeali, Kunubala, Gabutau, Makabweabweau, Nasauwai, Tabuara, Liliki, Kalu, Gotai, Wanahaua, Sekuku, Waiyau, Goteia, Kaula, Kubi, Boikalakalawa, Namoa, Dulaona, Balagatete, Tegerauna [5] The islanders, are farmers as opposed to eastern Louisiade Archipelago islanders.