The royal family of Spain is a good example of inbreeding. The current King's parents, Juan Carlos and Sophia of Greece, both have issues with inbreeding. On Juan Carlos's side, we see the remnants of hemophilia passed down due to the intermarriage chronicled by Queen Victoria. Juan Carlos's uncles, Alfonso and Gonzalo, both died from a lack of blood clotting believed to have been caused by their mild inbreeding.
The King's mother, Sophia, arguably has one of the worst cases of modern-day inbreeding. Two of her great-grandparents were brother and sister, and what's even worse is the fact that her great-grandparents are also her great-great-grandparents because the German royal family intermarried.