Hello, I may can shed some light on the Lowman or Larman connection. Michael was my ggg grandfather. I've been researching the family for 36 years.
Many years ago I received a letter from a Wehunt man in the Shakerag community of Gwinett county. He too was a decendant of Micheal. He had knowledge that Margaruite (Margaret) was a Larmon (often spelled Lowman). Margaruite was Cherokee. Michael was reported to have accompanied her and her family on the "Trail of Tears" to Oklahoma. He returned to Ga. but returned to OK. at least once more before he died.
Please Contact me Wehunt_sam@hotmail.com