I think you might be mistaken on who's brother is who's. Jarmon was born in 1812. His brother, Willie, had a grandson named William Eatmon born in 1854, so, Willie also went by "Wiley." born 1800 died 1853. His siblings, Jarmon "German" Eatmon (b 1812), Marshel Eatmon (b1810), Elisha "Lisha" Eatmon (b1810), Temperance "Tempy" Eatmon (b 1805), Greer Eatmon (b 1798), Haymon "Hamon" Eatmon (b 1796), Noel Eatmon, Roeany Eatmon, Salley Eatmon, Charity Eatmon, Priscilla Eatmon, Nicey Eatmon, Bashaby Eatmon, Senath Eatmon, and Mily Eatmon. Their mom was Obedience "Beedy" Eatmon, and their father was Theophilus Eatmon (b1780-d1848). I'm almost certain his father was Noel Eatmon (died 1766) but I have seen other places say Thomas Eatmon.
Hope that helps!!