Aveline [possibly Princess of Scotland] (Saint Hillary) - Alexander & Sybil are reported to have been childless. Anyone have sources for these children on Geni?

Medlands records another son of Alexander - Malcolm, by an unknown mistress. Is it possible Aveline & Mathilde are also the daughters of an unknown mistress?

Removed

Found Mathilde's proper place - she's a de Coucy by birth, daughter of Thomas I de Marle de Coucy, wife of Guy d'Amiens.

http://gw.geneanet.org/loic15?lang=fr&iz=53484&p=mathilde+d...

No reliable source, ancient or modern, places Aveline in the house of Dunkeld. Most sources do not name any parents at all.

http://www.knight-france.com/geneal/names/565.htm
http://powys.org/pl_tree/wc08/wc08_304.html
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=labro...
https://books.google.com/books?id=xHsW2iJCmi0C&pg=PA370&lpg...
http://fmg.ac/Projects/MedLands/ENGLISHNOBILITYMEDIEVAL3P-S.htm#Mat...

Medlands is the only source that explicitly states she was a widow (with possibly a son Richard) when she married James de St. Hilaire.

The St-Hilaires are also referred to as "de Harcouët" - which has been mistaken for HarcouRt in some sources. Medlands: Loyd indicates that this family originated in Saint-Hilaire-du-Harcouët in the present-day French département of Manche, arrondissement Mortain, canton Saint-Hilaire-du-Harcouët[1039].