Hi
most of the information obtained was from books found at the Bryan Lang Historical Library in Woodbine, GA. However the Tompkins Holzendorf Legacy published in 2007 has a family breakdown with most of the connections to each ancestor. All of Harriett's children are listed as well as her bio. Which stated that she was born in East Florida and later brought to Camden county where she gave birth to at least six children Julia and Eliza was listed as two of them.
Hope that will help
Good Luck
Wanda