I know your family! They are mine also just further down the chain. Margaret went by Marggie I believe, They did grow up in Trion and Summerville, GA area. There are still family in both Summerville and Dalton areas.
The one that you need to talk to is Lucille Garmany ??, she is in Summerville, has a quick mind and remembers all of these people from her childhood.
My maiden name was Garmany, my gr grandfather and Margaret's father were brothers.