FAG says Levi (RS) which seems to refer to a particular Levi Harrell.
This genealogy.com thread is interesting and this page
https://www.genealogy.com/forum/surnames/topics/harrell/2869/
says:
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Re: LEVI HARRELL 1750 - 1806 Wives
By Wayne Harrell December 21, 2001 at 01:56:53
In reply to: LEVI HARRELL 1750 - 1806 Wives
Wayne Harrell 12/17/01
Found this in Pioneers Wiregrass Georgia on Levi and his spouses as well as some additional info on one of their daughters:
PWG Vol 2 page 137 in Ref to HARRELL, William 1776-1861 Telfair (County GA) reads: His parents moved to Orangeburg District SC during Rev War and died there.The elder Harrel (text left off an 'l') was married twice, his second wife being Miss Esther White of SC, and he died there in 1806, in present Barnwell. (My Side Note: Levi will on file in Barnwell dated 1806 names William and Esther in it).Text goes on to state that William and his siblings Asa, Levi, and Francis moved to frontier GA in 1806 to Wilkinsin Co (noted also that this was later cut into Pulaski and Telfair Co).
PWG Vol 2 page 24-25 in Ref to ALLEN, Isaac 1778-1851 Thomas (Co GA) say he was wed twice with no name for first spouse but second was Esther Harrell born 13 Dec 1801 Daughter of Levi Harrell, RS, of Barnwell Co SC formaly of NC.She died in Thomas Co GA 4 Jan 1882.(My Side Note: this is why question who her mother was as Levi first spouse didn't pass until around 1804 by some records.Also gives cause to wonder if Levi first second spouse were from same family lines)
Also listed in other parts of these books is Lovett Harrell as half brother to Levi II, Asa, Francis, and William who were sons of elder Levi I or RS, who had the two spouses.
Still looking for where info on Mrs Cole first name came from and it may have been in PWG under one of the other names linked to Levi family line.