From ‘House of the Dragon’ to ‘Game of Thrones,’ here’s a rundown of the Targaryen family tree From Daenerys Targaryen in Game of Thrones to Rhaenyra Targaryen in House of the Dragon ...

Here's why he's important in the "Game of Thrones" franchise. 'House of the Dragon' just made a major change not in the book. It could make the Targaryen family tree even more complicated.