Join Date: Dec 2004
Location: zamboanga city, philippines
indeed, piras are exclusive to yakans.
according to Sherfan (the yakans of basilan island, 1976) - the barong and the kris, although popular, are less valuable or admired among the Yakan.
Sherfan further mentions that in the 1700s the sultanate of Sulu ruled over the island of Basilan nominally and had little influence over the Yakans who lived in the interior.
as to the origins of the yakans, some sources claim they have strong links to dayaks of borneo while others claim the yakans have polynesian ancestors.