Let me add my welcome aBoard, erzsebet. I did find a speck of information, although there appears to be little or no connection. There is such a thing as a pili, or Philippine nut , Canarium ovatum, Burseraceae.
However, the description makes no mention of it normally having two kernels.
http://www.hort.purdue.edu/newcrop/cropfactsheets/PiliNut.html