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]*].
Paul, Sir James Balfour, Scots Peerage: founded on Wood's edition of Sir Robert Douglas's peerage of Scotland; containing an historical and genealogical account of the nobility of that Kingdom. Edinburgh: David Douglas, 1904. NYPL ARO (Scots Peerage) (too fragile to copy). Available at https://familysearch.org/search/catalog/216265. Information from this source tagged as [Ref: SP VI p[0-9]*].
Sources for birth and parent Information
date:
third son [Ref: SP VI p344],
parents:
[Ref: Burke Peerage p1428, SP VI p344]
Sources for death Information
date:
[Ref: Burke Peerage p1428, SP VI p344]
Research Notes:
slain in battle in 1335 [Ref: Burke Peerage p1428]