who was Jacob's great grand father?

It's c, ephraim black.
Because in the movie twilight, jacob says when him and Bella are talking on the beach.

c.Ephraim Black he was the alpha of his pack

C. Emphriam Black
It is Emphriam Black because in the movie he is the leader of the 狼, オオカミ pack jacob even 発言しました it in the movie on the ビーチ to bella

ephraim black answer 'c'

Ephraim Black answer c!!!!!!!!!!!!!

I 愛 JACOB!!!!!!!!!!!!! I have read all of the 本 and watched all of the 映画 even breaking dawn part two like 100 million times and I am only 12

ephraim black

C