I have a Mary D. Jameson, born 1883-1884, Lauderdale Co., TN, in my family tree. As I'm sure you've found out, there are many spellings of the family name -- Jimmerson, Jimerson, Jemison, Jamison, Jameson . Nankipoo is in Lauderdale County. Molly is, of course, a nickname for Mary, and Mary D.'s
mother was Mary J (Keller) who went by Molly.