Hi Steve, I think I may have figured this out. I believe that the Elizabeth Boone mentioned married to Moses Mitchell is Elizabeth Boone Grant who was 1st married to William Grant. William Grant died abt. 1804, and I believe that sometime after that Moses married Elizabeth Boone Grant, who would be the sister-in-law of Mary Grant 1st wife to Moses, and not sister of Mary Grant. So that indeed would prove a marriage of Moses Mitchell to the sister of Daniel Boone, Elizabeth. Let me know what you think. :) Doris Mitchell