Needing help in searching for my 4th great grandparents burial locations - Taylor surname

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I have hit a brick wall in locating my 4th great grandparents Joseph Taylor and Jane Blackburn Taylor. Joseph was born about 1761 son of Isaac Taylor b. 1730 in Botetourt, Virginia and Emaline. I have Joseph as passed away about 26 Nov. 1809 in Huntsville, Madison, Alabama and married to Jane Blackburn about 1790 in Hawkins Station, Tennessee. The information I have on Jane is born about 1773 in Wautaga Settlement, Carter, TN and d. about 1826 in Madison Alabama. She is the daughter of Robert Blackburn and Margaret Richie Blackburn. I've had no luck in finding the burial location. Any suggestions or tips as where to search are greatly appreciated.
I discovered the Barnard's migrated from Massachusetts Bay and were Quakers. Thank you:) Amy

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