- Fife Place-Name Data (University of Glasgow): entry for Piteadie noting the grant “to Robert Glen and Margaret Bruce the king’s sister” (from a 17th-century index of charters).
fife-placenames.glasgow.ac.uk
- Robertson’s Index of Charters (1629): the classic index behind many later references to the Piteadie grant. Google Books
- Memorials of the Scottish family of Glen (19th-century): says Margaret, daughter of Robert I, married Robert de Glen and later the Earl of Sutherland (a view not universally accepted today). Deriv
- Scottish History Society / Acts mentioning Princess Margaret, Countess of Sutherland, explicitly styled David II’s sister (1346 charter). Deriv
- Most particulars for Sir John Glenn of Balmuto come from nineteenth-century compilations that cite the Exchequer Rolls, Registrum Magni Sigilli, and family muniments. The fullest stitched narrative is in “Genealogical Notes regarding the Family of Glen (or Glenn)”, which preserves: (1) the post-1373 deed naming Sir John and wife Margaret with the Wemyss couple; (2) Margaret’s status as Erskine/Inchmartin co-heiress; (3) Sir John’s death by 1428; and (4) the three co-heiress daughters and their marriages. The transfer of Balmuto to the Boswells via Mariota is independently echoed in architectural/historical notes on Balmuto Castle. For Ogilvy, Scots Peerage volumes help confirm the Inchmartin connection.
- https://www.stravaiging.com/history/castle/balmuto-castle/
- https://ia904504.us.archive.org/9/items/scotspeeragefoun01pauluoft/scotspeeragefoun01pauluoft.pdf
- https://archive.org/stream/jstor-20085618/20085618_djvu.txt
- Canmore / National Record of the Historic Environment entry for Dunoon Castle (includes the note about “John, constabularius de Dunnon”). Best single stop for the firmest bit. canmore.org.uk
- Castle Studies Trust (DigVentures) Dunoon project blog—sets the documentary horizon (1257) and context. castlestudiestrust.org
- DigVentures Community Archaeology Report (2024)—references the appearance of “John, Constable of Dunoon” in archival mentions (project synthesis). DigVentures
- JSTOR (Scottish genealogical note on the Family of Glen/Glenn)—the place most people get the John de Ness = Constable = father of Richard claim; useful, but weigh cautiously.
- https://www.jstor.org/stable/pdf/20085618.pdf
- https://www.electricscotland.com/books/pdf/epitaphs01.pdf
- https://freepages.rootsweb.com/~glenngenealogy/genealogy/ui21.htm
- http://www.rewebb.com/glenline.htm
- https://www.wikitree.com/wiki/Glen-385
- https://www.glenncourt.com/genealogy/families-glenn/
- https://www.wikitree.com/wiki/Glenn-4361