We know just about everything about Prince William, Kate Middleton, and the rest of the British royal family—thanks in part to Netflix's hit series, The Crown. However, they’re not the only royal clan that inspired a compelling TV series. Perhaps you've heard of Atlantic Crossing, PBS's eight-part historical drama that follows the Norwegian royal family after Crown Princess Märtha and her children flee the 1940 Nazi invasion of Norway. In the series, we learn that they journeyed across the Atlan