Hi John, I think what he was asking is what document source is this name found, to prove the middle name. Is there a primary document that shows these men using this middle name? What is the document and where can it be found and what is the source citation.
Just seeing it on Ancestry on a tree is not a source, it must be on an actual document like a will, christening record, marriage liscense, deed.
If ancestry has a scan of a document that does count.