I have been researching the name, my father and grandfather have done a more in depth search but I saw where you are offering a book about the name.
My Father has pictures and documents back to the Kings Mountain info and farther back but I don't think he has as in depth info as I am reading online. I would like to give this book you spoke of to him as a present.
My line is of the top of my head is: James Lee Kilgore/ Dwayne Alen Kilgore, James M Kilgore. My grandfather James M has 2 brothers, one named Giles Kilgore and they lived in Kingsport TN.