Who is Dai and Cyfartha from How Green Was My Valley and what is their importance? How_Green_Was_My_Valley English & Literature Dai and Cyfartha | How Green Was My Valley

Dai Bando and Cyfartha Lewis are described as big, burly coal miners and prize fighters. They teach Huw how to box, and when Huw's teacher beats him..... they beat his teacher. Over the course of the novel, Dai is blinded in a mining accident, after which, the pair buys the Three Bells public house. Dai takes care of the bar, while Cyfartha continues to work in the colliery.