Popsugar Celebrity The Royals How Is Princess Eugenie Related to William and Harry? How Is Princess Eugenie Related to William and Harry? Well, That's an Easy One 2 October 2018 by Britt Stephens View On One Page Photo 1 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Previous Next Start Slideshow The RoyalsThe British RoyalsPrincess EugeniePrince WilliamPrince Harry