Tywysog Gafyn ap Llywelyn Uthyrpendragon is the youngest son of Llywelyn, Rex Britannorum (King of Britons). Tywysog Gafyn has many hobbies and aspirations. He enjoys playing chess with his father and developed a passion for the game at a very young age. Just as his older brother, Gafyn has trained in martial arts under his father since the age of 5. He graduated from high school in Puerto Rico.

He also enjoys snowboarding and surfing and is looking forward to earning his pilot’s license. The British laws and customs do not recognise a system of primogeniture, so it is possible that Tywysog Gafyn could succeed to the throne as Rex Britannorum (King of Britons) despite being the younger son.