Bulloch, John Malcolm, House of Gordon, Aberdeen: University Press, 1907. Available at http://archive.org/details/houseofgordonedi02bull. Information from this source tagged as [Ref: Bulloch GORDON v2p[0-9]*].
Sources for birth and parent Information
father:
[Ref: Bulloch GORDON v2p441]
Sources with Information about marriage to Helen GORDON
names:
[Ref: Bulloch GORDON v2p443]
Research Notes:
William VIII of Wardes [Ref: Bulloch GORDON v2p426]
of Rhyhil [Ref: Bulloch GORDON v2p443]
succeeded his nephew as eighth baron of Wardes, and as third and last
baronet [Ref: Bulloch GORDON v2p443]