I do not have the documentation that you are looking for, but years ago when I wanted to go into the DAR, Louis N. Agee, who was at the time the registrar for the Huguenot Society, and my grandmother's cousin, (and would later write The Agee Register published in 1982), wrote a letter in my behalf and he stated that the first Agee record was published by Rev. James Wesley Agee (1838-1908) and that he was a contemporary with many of the grandchildren of Mathieu Agee. I knew my grandparents and great grandparents and great aunts and uncles and cousins very well, and I am still surprised at how much detailed information I retain to this day.The second Agee record was done by Dr. Purl Myrtillo Agee (1876-1955.)I suppose there are many errors in all of them, but for the most part, the information is priceless, and of great value to those of us researching those lines. It gives you a time and in many cases a place to begin your research.It gives you siblings to check on, and it puts you in touch with other researchers. I am hoping that someone out there will do the next Agee book and not wait so long to do it.I would like to see more pictures in this one.I know a lot of us have old portraits to contribute if it ever gets going.But to get back to your original question, I suppose land records,wills, Parish records, and Bible records were the basis for the early family lineage.Some which may have since then been destroyed.Hope this helps.