David Tennant's eldest son Ty is following in his father's footsteps as he is set to star in the Game of Thrones prequel House Of The Dragon.
It's not confirmed who the 20-year-old actor will play in the HBO series, but it is widely thought he will portray the teenage version of Prince Aegon Targaryen.
Rumours began swirling after Ty's mum Georgia Tennant posted a photo of her son at the series premiere with the hashtag #aegontargaryen.