The language of the Western Subanen in the Zamboanga peninsula is also called Siocon. They are found in the Zamboanga peninsula of Mindanao, this language is known to others as Siocon.
Subanen (also, Subanon and Subanun). It is said that when the Muslims arrived in Zamboanga and other parts of Mindanao, the original Indonesian settlers were pushed back from the coastal areas to the river. Their name, Subanen, comes from suba (river), and means “river people.” However, they later moved farther back to the hinterlands away from the disturbances created by new settlers, such as the Visayans and Spanish colonizers. Subanen villages are headed by a timuay (chief), who settles the disputes and misunderstandings among the village members.
All Subanen subgroups have their own dialects, but they remain mutually intelligible with each other.
Source:
Ethnologue, www.ethnologue.com/
