I've always been amused by family trees in the old world.

I was born in brazil but my great grandfather came as a war refugee fron Sweden (he had two brothers: one stayed in Sweden and the other fled to the Us). At that time there were refugees from all over europe arriving in latin america so it is very common where I live for someone to bear family names from 2 different countries (my wife has german and portuguese last names, for example).

Hence it is very difficult to trace our family trees past a few generations (although my family was very lucky to find relatives living in the Us and Sweden recently).