Mandau handle-connection to campilon handle

[Battara]

There might be a possible connection, but that would go way back to the early 16th century, where we have Spanish illustrations of Tagalogs, etc with "open mouth" hilts. This might be a general Austronesian motif at one time. It would appear that later only those on Borneo, Mindanao, and Suliwesi used the kampilan.