Sure! But "only the wealthiest could afford to travel long distances" is over the top. It's not some sample from before the bicycle. These people's parents, or grandparents, were mixed up all over the planet in WWII.

It would be interesting to know more details about this 0.03 percent. No idea whether you should put your money on small towns or on big cities (e.g. parents both adopted & didn't know).