There is one.

Only she’s Black and Hispanic so most people have never heard of her.

Her Serene Highness Princess Angela of Liechtenstein

Prince Maximillian, Princess Angela, and Prince Alfons

They seem to be a pretty private couple as there’s not a ton of information available about them but the basic facts are: she was born in Panama, raised in New York, married the Prince in 2000 and has one child, the above pictured Alfons, born in 2001.