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I show Charles James Yearout as a ggggrandfather born 1739 in Ilbesheim, Germany in 1739 (d3/7/1815 in Maryville, TN). His wife was Mary (d 1786 in Staunton, VA). They had a son Abraham (b1768,m10/2/1794) who married Susannah Burkett. Abraham had a son Charles James Yearout who married Mary Todd. They had a son James Andrew (6/17/1833,Jacob (b1836), daughter Mary (b1838), and son William LaFoster (b2/7/1840, d 1930). William Foster Yearout changed his name to Thomas Samuel Mccann, married Mary Marie Anna HUffman (b12/6/1872, d1962), and had daughter Julia, and sons Charles,Jimmy, and Thomas(b10/17/1903, d11/17/77). Thomas married my mother Corene Booth(b4/20/1918)
Going the other way I show Charles James Yearout having a father Hanss Georg Jahraus (1699-1726) and mother Maria Catherina; and a grandfather Nicholaus Jahraus (b1672 in Wilferdingen, Germany)
Hope this helps. I left out a few details but this is the bulk of it. Let me know if this agrees with your research.