AKA “The Old Pretender”. And his son, the Young Pretender, aka Bonnie Prince Charlie, would have succeeded him. Except the Stuarts never got to be kings, and were passed over for George I, despite their better claim to the throne. The reason this never happened was decided atCulloden Moor.
The person who gets to be called king isn’t the person with the closest line of inheritance to some previous king. Lots of people don’t get to be king, we could make a list.