I am thinking of giving my fantasy book a sequel that takes place after the main character’s reign. It would focus on their descendants and the aftermath of their heir’s coronation. At this point, I realized that medieval wars were fought for two common reasons. They are either fought for one ruler usurping another or a blood feud when the line of succession is disputed. There have been prominent examples of royal blood feuds in medieval England from The Anarchy where Matilda challenged her cousin Stephen for the English throne to the War of the Roses when the Yorks and Lancasters were at each other’s throats. I am thinking of having the sequel revolve around a civil war that is also a royal blood feud.