Was Blue Sky-Cornstalk Blackfoot Indian? My great grandfather is Sam Adkins, blackfoot indian. He married a woman named Lilly or Lillian. He had two brothers Walter Adkins and Burke or Berk Adkins. I do not know if he had any other siblings. Sam and Lillys children were Cleopis, Andy, Anos, Ida, Cory, MayDell, Macey, Lacey, and Eunice. Macey and Lacey were twins. One of the twins was struck by lightning and died. Cleopis spent most of his adult life in prison for murder.