Japan only has three princes in the line of succession (princesses are not allowed become empresses): crown prince fumihito, prince hisahito, and prince masahito. Prince Masahito is old and has no children. Fumihito is 60 yo too. Only Prince Hisahito is capable of fathering any sons if any. Unless Japan modifies the constitution, the succession crisis seems to be unresolved for some time.
House of Empress Sisi, produce 3 empresses and 17 queens, besides many other titles, its members have titles in Spain, France, Central Europe, Italy, Russia, Lithuania, Sweden and Georgia.
Many other conections are shown (like first, second and third cousins), their are shown on black with only the name and title written, they are given by Wikipedia without a long search. Straight line are woman - children, dashed line man - children.
Man are only shown if this marriage produce females, but woman are usually depicted with her husband's titles.
Teacher-Student lineages in Japanese martial arts. I.e who taught whom.
Oswald II's wife was a descendant of Alfred the Great
its my first post so don't flame me guys. i didnt base it off of historical accuracy, i based it off of similarity for lack of a better word. for example, i know that classical liberalism didn't come directly from representative democracy, but classical liberalism is a form of representative democracy, and classical liberalism is, well, classical. it's not that modern day. so it is an early form of representative democracy, so i put it as the child of representative democracy. i hope my explanation same some sort of sense lol