I am working with a cousin that has done a great deal of research on the Shasteen's. Through her research and perhaps yours you may have found different spellings of the name, such as: Chasteen, Chastain, Shastain any many others. There is a surname project that has started providing free DNA tests for the purpose of generating more and accurate information to help people get beyond the road blocks that people often run into. I know in my Shasteen line that even though people were born as a Shasteen, for some reason they changed the spelling to some I have listed above. I have no affiliation with the group doing the testing. I am hoping to get enough people tested so that we all might find additional family members. The person being tested has to be a male Shasteen. All information is confidential. If any one is interested please contact me via the forum or email and I will give you the company name and web site information and you can check it out yourself.