I don't think I have seen this Mary Elgin to a Thomas Doolin.I will look in my stuff.But the only Thomas Doolin I am framilier with is Thomas Doolin who married Elizabeth Eoff Knox in 1815 in Pulaski Co., Ky.This is not only in the Pulaski Co., Ky records marriage book one.But in the book done by the Craig/Knox family. I'm not trying to do all the Dulin/Doolin/Dulan/Dulen etc in Ky.Trying to sort my own line. Which puts most of my research on Dulin/Doolin before 1900.I do also have Wilma Cogdells books.I don't know if she has this Johnson Doolin in her books either.Mainly Pulaski Co., Ky and before stuff.
Pulaski Co., Ky Marriage Bk 1; pg 42
28 Sept, 1815 Doolin, Thos.b.June, 1789; m. Elizabeth Knox, pres. Moses Foley and John Knox
REF:2pg 50, KNOX ; James Knox, Sr & Elizabeth Craig Knox and their descendants; compiled by Lorene K. Petersen & Jennie Belle Lyle (Revised Edition) I OWN THIS BOOK (DIANNA BOURKE PRIVETTE) Under Descendants of John Knox and Elizabeth Eoff; 2- John Knox, b. 17, Scotland, son of James Knox and Elizabeth Craig, his wife; d. Dec 2, 1818, Pulaski Co., Ky; m. February 12, 1789, Madison Co., Ky, Elizabeth Eoff, b. 1771, d. Jan 16, 1851, who was a sister to Isaac Eoff who married Margaret Knox, sister to John. His Pension File W-10181