The Ibans or Sea Dayaks are a branch of the Dayak peoples on the island of Borneo in South East Asia. Dayak is a title given by the westerners to the local people of Borneo island. It is believed that the term "Iban" was originally an exonym used by the Kayans, who – when they initially came into contact with them – referred to the Sea Dayaks in the upper Rajang river region as the "Hivan". Ibans were renowned for practicing headhunting and territorial migration, and had a fearsome reputation as a strong and successfully warring tribe. Since the arrival for Europeans and the subsequent colonisation of the area, headhunting gradually faded out of practice, although many other tribal customs and practices as well as the Iban language continue to thrive. The Iban population is concentrated in the state of Sarawak in Malaysia, Brunei, and the Indonesian province of West Kalimantan. They traditionally live in longhouses called rumah panjai or betang (trunk) in West Kalimantan. History Early origins The Iban people of Borneo possess an indigenous account of their history, mostly in oral literature, partly in writing in papan turai (wooden records), and partly in common cultural customary practices. According to myths and legend, they historically came from Kapuas river in Borneo but in Indonesia. They slowly moved to Sarawak due to tribal indifference. Some of these tribes manage to settle in Sri Aman river basin. During the period of personal rule by James Brooke, these tribes move further inland into Sarawak and came into conflict with many local tribes there. 18th–19th century The colonial accounts and reports of Dayak activity in Borneo detail carefully cultivated economic and political relationships with other communities as well as an ample body of research and study concerning the history of Dayak migrations. In particular, the Iban or the Sea Dayak exploits in the South China Seas are documented, owing to their ferocity and aggressive culture of war against sea-dwelling groups and emerging Western trade interests in the 18th and 19th centuries. In 1838, adventurer James Brooke arrived in the region to find the Sultan of Brunei in a desperate attempt to suppress a rebellion against his rule. Brooke aided the Sultan in putting down the rebellion, for which he was made Governor of Sarawak in 1841, being granted the title of Rajah. Brooke undertook operations to suppress Dayak piracy, establishing a secondary objective