Hi! I am a direct relative of John Jacob and George Yeakley from Berks County. Sorry to say, it has been proven beyond doubt that they were not the sons of Benedict Youghli, and, that George Yeakley's wife was Anna Laucks, not the Deppen falsely mentioned in 'Counting Kindred'. You may want to check out my newly posted message about the Youghli-Deppen Myth.
Hope this is not too bad for your genealogy applecart.