Did you know this? I didn't.

 

https://www.negros-occ.gov.ph/the-history-geography/

 

Where did they come from? I can't find a good source explaining. Where's James A Michener when you need him?

Interesting, but I don't see girls in Negros Occidental having darker skin than the rest of PI, which is a little strange!

According to this http://www.ethnicgroupsphilippines.com/ethnic-groups-in-the-philippines/ati/ Ati people came from Borneo. In the past this group is secluded in the mountains but nowadays they’re visible in major cities.