Some interesting reading lately which shows the important of a Wills, Enduring Powers, and proper succession planning throughout history! During the 12th century in Norway, after the death of the king, clear succession laws did not exist – the main criterion for being considered a worthy candidate for the throne was to be a descendant of Harald Fairhair through the male line.
Some two dozen rival kings and pretenders waged wars to claim the throne and the dispute continued for 110 years. Much like some modern-day disputes!
A properly drafted testamentary instrument is crucially important.