I am a descendant of Ransom Geer through Robert Usery Geer through Ida Jane Geer and Joseph H. Allison.I have not been able to document any sons of David Geer of White County, TN other than Frederick. I have found no direct evidence that either Solomon or John are David's Sons. I have seen only speculations. Would appreciate any documentation that anyone may have.
I note that the DNA connecting David with John Geer of Orange county, NC is only through Solomon and John Jr. but not through Frederick. Unless we have more evidence we should be careful in interpreting the DNA results.