In the series A Song of Ice and Fire, who is the founder of House Clegane?
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### Instruction:
In the series A Song of Ice and Fire, who is the founder of House Clegane?

### Response:

The name of House Clegane's founder is unknown. He was a kennelmaster of Casterly Rock and saved Lord Tytos Lannister from a lionness. As a reward, Lord Lannister granted the unnamed Clegane a knighthood.