Yes, this is the Rachel Carpenter who married James Harvey Thompson on Dec. 8, 1851.In fact after looking into it, he is listed in the early death records here, too, as:
James H. Thompson, white, married, d. July 5, 1875 at the age of 45y, 6m, 7d in Symmes twp, of chronic disease.He was a farmer and was born in Kentucky.
Death certificates were not put into force until 1909, so finding their parents might be a little difficult.I believe that I might be able to point you in a direction on Rachel, though.
In the 1850 census she is listed in DECATUR twp. as:
Rufus C. Davisson - 29 Oh. Elizabeth - 25 Tenn. (maiden name Rayson) Mary - 8 (all others born Ohio) Margaret - 6 Eliza - 4 John - 2 Rachel Carpenter - 22
Just a few houses away is John Carpenter listed as:
James Thompson - 30 Margaret - 28 John Carpenter - 24
John Carpenter married an Amy Thompson on April 6, 1852.And according to later census, I thought at first this was your James Thompson that he was living with and maybe Margaret had died within the year and he remarried Rachel.However, I found a biography in the 1882 Hardesty book that states that Rev. James Thompson married Margaret Bolen in 1840.They had 3 children that died before the 1850 census and had one after the census that lived.She was still living at the time of the biography and they can still be seen together in the 1870 and 1880 census in Decatur twp.
I believe that John Carpenter is Rachel's brother.In the 1860 census the families live only 5 houses apart and are listed as:
John Carpenter - 36 (all born in Ohio) Amy - 30 John - 8 Wm. - 3 Jacob - 4 Melissa - 1
Harvey Thompson - 31 Ky Rachael - 30 (others born in Ohio) Martha - 7 Mary - 5 Vennadell? (female) - 3 Geo. W. - 1
1870 census lists them as: Harvey Thompson - 41 Ky Rachel - 40 (all others b. Oh.) Martha - 18 Marietta - 15 Geo. - 12 Chas. - 10 Marcus - 9 Jacob - 8 Lafayette - 5 Jasper - 4 James - 2 unnamed male - 3/12
(John Carpenter lives right down the road)
Rachel has 2 more children listed in the early borth records.They are:
Margaret D. Thompson, b. Dec. 10, 1871 to J. H. Thompson and Rachel Carpenter. Lucinda Thompson, b. Aug. 22, 1875 to Harvey and Rachel Carpenter.
I don't see her on the online 1880 census for Lawrence Co. but I would say she is still here.It doesn't list George Thompson either, but he is here.She is not listed in the 1880 index at the library either.
Rachel is listed in the 1890 census, so James H. Thompson was in the civil war.
John Carpenter died here on Jan. 21, 1912 at the age of 77y, 8m, 19d.He would have a death certificate that listed his parents.
I will email you a map of Symmes township, where they lived.It borders Gallia Co., Ohio and Peniel, Ohio is the closest town to where they lived, but it is officially in Gallia Co. It shows where John Carpenter and Rachel Thompson owned land.
The only 2 Carpenters in the 1840 census were a Wm. (age 70-80) who lives in Upper and a Jacob who lives in DECATUR.(I would be curious to see if this is John's father on his death certificate.)Jacob is gone by the 1850 census and his body count for the 1840 census is as follows:
2 males < 5 1 male 15-20 1 male 20-30 1 male 40-50