In the early 90s, I took the book Shogun to the counter to get it signed out. As the librarian was stamping the card, she asked me if I was researching my heritage.
I asked her what she meant, and then she said, "aren't you Japanese?"
This was the first of many times that people assumed I was Asian. I've been mistaken for Chinese, Japanese, and Filipino over the past thirty years. As far as I know, I have no Asian relatives.
That being said, my Inuit ancestors were related to Mongolians, so I guess that's carried through a lot of generations. Going waaaay, way back, I may have a Mongolian doppelgänger.