I can verify that you believe that the Abshears are related to Robert Frost, based on your question.
As to whether "that" is true, perhaps you could explain what genealogical connection the Abshears have to the Robert Frost family. Through which Abshear ancestor does the connection happen? I do not find Abshears in my Frost family tree, but that doesn't mean one doesn't exist.
With your contribution, those familiar with the Frost genealogy might be able to verify the connection.
