When the Legends Die — Hal Borland

When his father killed another brave, Thomas Black Bull and his parents sought refuge in the wilderness. There they took up life as it had been in the old days, hunting and fishing, battling for survival. But an accident claimed the father's life and the grieving mother died shortly afterward. Left alone, the young Indian boy vowed never to retum to the white man's world, to the alien laws that had condemned his father.