I am one of Kenneth's many sons, he also had two daughters. He passed away a couple of years ago and was in his late 80s. The real Crazy Horse was not his grandfather, wrong tribe but his grand father Thomas Cosgrove was involved in the Indian Wars as chief of Shoshone Indian Scouts under Shoshone Chief Washakie, they were involved in the Battle of the Rose Bud a day before the Little Big Horn.
I did not know my father because all of his kids were placed up for adoption, it was probably for the best during those times. We did eventually make it back to the reservation and get to know him and our mother Emma Jean for a few years before their passing.
Thank you for sharing part of your story in knowing them, it brings peace to my heart.
May the Creator watch over you and your loved ones.