Found 3 boys and girls with the meaning of culhwch
Celyddon / 8 letters 
Meaning of Celyddon In Celtic, Celyddon means Mythical father of Culhwch More
Olwen / 5 letters 
Meaning of Olwen In Celtic, Olwen means Mythical daughter of Yspaddaden More
Olwyn / 5 letters 
Meaning of Olwyn In Celtic, Olwyn means Daughter of a giant More

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