Caucasian (which, coming from Western Europe, is a very strange term to use for me, but whatever: blond with grey hair, grey/blue eyes and light skin) at least two generations back. My father once suggested there is some Indonesian blood from the generations before that, but not in the official sense. More of a Dutch people occupying, brutely colonizing and subduing the local people sense, combined with a great-(great?)-grandmother doing the nasty with one of the locals. Not that there was any proof of that of course.

Other than that, I think it's Western Europe for the past 150 years at least, probably. We still use the family crest (in jewelry, not for official documents, although my great-grandfather was a notary public who has used his ring on official documents in the 1920's) from when my great-great-grandfather left Germany as the youngest of impoverished German nobility, changed some letters of his last name and married a woman in Amsterdam. The family crest itself can be traced back to the 1500's, but with the number of ancestors you have when you go back a few generations (128 going back 7 generations or approximately 200 years, in the 1500's that must be about 15,000+?) and my example with the Indonesian man above, this is hardly meaningful.

In the Netherlands there is a very strict definition of when you're "foreign" (allochtoon) or "local" (autochtoon), based on the birthplace of your parents (making the Dutch royal family foreign by definition).
I understand that in the US you basically get to pick what group you want to be in? As in "although my father comes from Mexico, I feel more connected to my mother's side who is Caucasian, therefore I am Caucasian"? Or did someone explain this badly to me?