Willaim Hardeman's Indian Wife

Went to a Talley family reunion, anyone know if Blackstone Hardemans's son William was married to an Indian, Mary Elizabeth Rogers was her name.Daughter would have been my great grandmother, Martha Perry Hardeman.Saw picture and would swear she has Indian blood. Martha Perry was married to James Jeptha Talley, she died in child birth. Any infomation would be helpful. I had never thought this until I saw the picture. Nancy