with 7th century Sriwijaya and the surrounding islands. There was a mention of "Wanin" and "Sran" in a 14th-century Nagarakretagama manuscript as a region/tributary of Majapahit. Scholars tends to attribute this to Onin Peninsula and the southern region of Sran or Kowiai referring to the kingdom of Namatota, which if true represent the earliest mention of a native names of Papuan regions. The first sighting by Europeans of this zone was in 1606, in the Spanish expedition commanded by Luís Vaz de Torres. This region alongside others mainly the Western part of New Guinea became part of Sultanate of Tidore under the expansion of its influence led by the legendary figure Gurabesi. The Dutch constructed Fort Du Bus in 1828 on Triton Bay in the current Kaimana Regency and formalised Tidore rule over this region (and Tidore's protectorate status under Netherlands) by appointing three local rulers Sendawan (King of Namatota), Kassa (King of Lahakia) and Lutu ("Orang Kaya" from Lobo and Mawara) under which many local kingdoms and tribes swear fealty. However the Fort was abandoned in 1835 due to the unhealthy climate and attacks by natives, and the Dutch generally left the rule and collection of taxes of these region under Tidore, which in turn delegated them to regional rulers, like Misool which collected tributes from Onin kingdoms. The Dutch colonial authorities began to govern more directly late 19th century with the ending of hongi fleets and slave trading of Tidore in 1850, followed by the agreement on 1872 with Tidore which made the Sultan explicit only had right on feudal matters, and the sovereignity if New Guinea rest in Dutch East Indies government, in practice allowed them to establish administrations in New Guinea. In 1898 the Netherlands Indies government decided to establish administrative posts in Fakfak and Manokwari, followed by Merauke in 1902. Tidore throne became vacant in 1905 and the lack of ruler diminished its autonomy. By 1909 Tidore signed away its independence and in 1910 Bacan and Tidore signed contract invalidating all their previous contracts and its region became part of Dutch East Indies, although still retained some jurisdiction in New Guinea until 1911 where further legislation was enacted to curtail it. Languages There are several Central–Eastern Malayo-Polynesian languages spoken on the Bomberai Peninsula, including Uruangnirin, Onin, Sekar, Arguni, Bedoanas, Erokwanas, Irarutu, and Kowiai. Language isolates spoken in the Bomberai Peninsula are Mor and Tanah Merah.