Aaron Ashford Sr. was in the 1840 Parke County, Indiana Census with his wife and two sons. There is a question as to whether at 70 years of age he and his wife Rebecca returned to Columbiana, County, Ohio where his death probate was conducted by his son George Ashford in 1849.
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5-2020 Update - Per the "Portrait and Biographical Album of Hillsdale County, Michigan" 1888, Pg. 304 highlighting Jesse and wife Elizabeth Chamberlain Crow, the graphic above indicates that Aaron Ashford Sr. and wife Rebecca Jane Nutt Ashford spent the remainder of their lives in Columbiana County, Ohio. Elizabeth Chamberlain Crow was the daughter of Samuel and Susannah Ashford Chamberlain. Susannah Ashford Chamberlain was the daughter of Aaron and Rebecca Jane Nutt Ashford. Thus Elizabeth, the granddaughter of Aaron and Rebecca Ashford, is the reporter of this fact.

As all Ashfords buried to date in Columbiana County, Ohio are buried in the East Carmel Cemetery it would make sense that this is likely where Aaron and Rebecca Jane are laid to rest also.
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Aaron Ashford is in Loudoun County, Virginia in April 1796 and is working on a road construction crew.

12 April 1796, Loudoun Order Book Q, p. 358 - Road Construction

A list of hands returned by Benjamin Grayson Gent. to work under Joshua Botts Surveyor Vizt. Benjamin Meredith 2, Joseph Whitacre 1, Enoch Whitacre 1, James Whitacre 1, Joshua Whitacre 2, Benjamin Whitacre 3, Richard Carter 1, Jonathan Milburne 6, Peter Milburn 1, William Russell 2, Timothy Taylor 2, Joseph Braden 2, George Braughard 1, Edward Wilson 1, John Langley 1, Benjamin Davis 1, Jonathan James 2, Stephen Gregg 1, Solomon Nichols, David Taylor 1, Jonathan Taylor 1, Noah Johnston 1, Ruphus Updike 1, William Smith 1, Patrick Sullivan 1, Saml. Palmer 2, John Broughard 1, John Baldwin Sr. 5, John Brown 2, Jacob Iden 1, Samuel Iden 1, Aaron Ashford 1, John Spicer 1, John Wauford [Warford] 2, Live [Levi?] Milburne 1, William Musgroves 1 – 51. Loudoun Sct. Pursuant to an Order of the Worshipful Court of Loudoun the above hands or any that may hereafter settle in their place are ordered to
work on the road whereof Joshua Botts is appointed Surveyor and keep the same in repair.
Given under my hand April 9th, 1796 Ben. Grayson" which is ordered accordingly.