Burke, Sir John Bernard, Genealogical and Heraldic History of the Peerage Baronetage and Knightage. 99th edition. London: Burke's Peerage, 1949. Available at http://archive.org/details/burkesgenealogic1949unse. Information from this source tagged as [Ref: Burke Peerage [cx0-9]*].
Sources for birth and parent Information
father:
illegitimate son of Sir John Gordon [Ref: Burke Peerage p1055]
Research Notes:
of Ruthven [Ref: Burke Peerage p1055]