I'm writing a story that involves the death of a king. The king was married, and had granted his spouse the crown matrimonial, allowing them to rule jointly. (I'm pretty sure this is how this works, but correct me if I'm wrong. Either way, it's fantasy, and it would make sense with the characters if it worked this way.)
The king also had a child. At the time of the king's death, the child was underage, but there is historical precedent in the country for an underage person acceding to the throne without a regent.
Who would be the new ruler--the king's spouse, who had been ruling alongside the king quite successfully for years? Or his child, who would accede without question were it not for the spouse? Would the king's wishes matter at all in this, or would they be ignored after his death?
I wasn't able to find any historical precedent for an issue like this-- in fact, I wasn't able to find a real-life example of the crown matrimonial being granted at all. Demanded, sure, but not granted. I'm sure some of y'all know more about succession than I do--is there anything that causes you to believe that it might turn out one way or the other?