Regarding Willis KILGORE and Isabella LINDSAY of Gregg co,TX. There are LINDSEYs (perhaps LINDSAY changed to "E"?) all over middle GA.Try Wilkes, Wilkinson, and Bibb counties. Using both spellings...My Paternal Grandmother Irene LINDSEY HOLT was born in Irwinton,Wilkinson co GA.Her husdand,Davis Abdon HOLT was b. in Rusk(Gregg?) county,TX.
There may be a link here, as for a long time, I thought my LINDSEY was spelled with an"A", but I've been corrected by other family members....however, maybe these clues will help you.
Good luck hunting..