Egle, William Henry, Pennsylvania Genealogies, chiefly Scotch-Irish and German, 2nd edition, Harrisburg, 1896. Available at http://archive.org/details/cu31924028856900. Information from this source tagged as [Ref: Egle PA-genealogies p[0-9-]*].
Sources for birth and parent Information
father:
[Ref: Egle PA-genealogies p216]
Sources with Information about marriage to James MITCHELL