Clegane (father of Gregor and Sandor)

"Soon after, my father died. They say in a hunting accident."

- Sandor Clegane

This unnamed man was the father of Ser Gregor Clegane, Sandor Clegane, and an unknown daughter. He was the son of Clegane, the founder of House Clegane.

Biography
The second head of House Clegane was adamant on having a knight within his family, a wish that was fulfilled by his son Gregor Clegane, who was personally anointed by Prince Rhaegar Targaryen with the influence of Tywin Lannister. Later, he was killed in a suspicious hunting accident.

This man was known to have favoured his son Gregor over Sandor, going so far as to protect Gregor when the former burned half of Sandor's face.