i found mine under -truely filipino- (cudal,origin: pangasinan,most of my relatives still live there today in bolinao) from the list there are: truely filipino last names,spanish/filipino and hybrid chinese/filipino.
check and see where your last name lies in origin.
http://www.bibingka.com/names/default.htm
check and see where your last name lies in origin.
http://www.bibingka.com/names/default.htm