Ravilious, John, de Lindesay and Allerdale. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 4/28/2007. Subject: de Lindesay and Allerdale: a Pennington ascent?. Available at https://groups.google.com/g/soc.genealogy.medieval/c/5PO3_YV-pwk/m/xhLdcBA_Lp0J. Author address: Therav3 at aol dot com. Information from this source tagged as [Ref: John Ravilious SGM 4/28/2007-081547].
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 III p[0-9]*].