There is a possibility that my line and yours intersect here, but with names like Mary and John it is difficult. I have a few more details and maybe that will help? There is a line of McCulloughs from Pennsylvania in which Ebenezer McCullough married Mary (maiden name Hart, we believe, also born in PA).After Ebenezer died, Mary moved to Ohio and died there in 1851.She and Ebenezer had a son, John Caldwell McCullough, b. 1812, d. 1881, m. Jane Sankey. I don't believe I recognize any of the other names.Mary's oldest daughter was Rachel, b. abt 1817 and d. 1852.I don't believe we know if she married or where she died.My ancestor, also a daughter of Mary and Ebenezer was Jane K. McCullough and she was married to Benjamin Judson.She was born in 1822 and died in 1900 here in Wisconsin.We don't know where Mary McCullough is buried.We've been to Ebenezer's grave in Washington Co., PA.I hope this helps.