Hello Robert,
a nice and interesting little knife and it will have for sure a local name which I don't know. Hope that someone else will be able to tell more about it as I am able to do. I would call the pommel figure Anito and not Bakunawa, see here, post 4:
http://www.vikingsword.com/vb/showth...light=bakunawa
I think that it is a village made personal utility/fighting knife. Much to less is known special about the small Visayan knives.
Best regards,
Detlef