*doh! We forgot our V-8 juice!*
Look at the County of Leon! A Guimarc'h Leon, b. 1039, is already in place and heir of Morvan Leon! So all that is needed is to put to death Morvan in favor of his son Guimarc'h. All that is needed prehaps is the circumflex over the è in Lèon.
Though I do understand the argument for lowland Scots being represented by Anglo-Saxon... I lean towards option B. But I could be moved on the issue. Lemme do research over the next few days and get some books out of the library. It simply would seem ... very odd to have Anglo-Saxon kings of Scotland IMO, more odd then option B.
Edit: We have Euzon Penteur (Eudes, Count of Penthièvre) as Count of Penthièvre, however he was killed by Konan II back in 1062. The count of Penthièvre is Euzon's son Jefrez Penteur (he is alive in the county). This needs to be corrected.
Edit 2: Alan Penteur (Alan the Red), son of Eudes, Count of Penthièvre and younger brother of Jefrez Count of Penthièvre, was William of Normandy's Breton commander at the battle of Hastings, and should be in Williams court. He was created first earl of Richmond following the Harrowing of the North (When the Saxon Earls of Northumbria and Merica, as well as Eric the Wild and their ally Bleddyn ap Cynfyn of Gwynedd allied against William). His brother Brient should also be placed in Willaim's court. He was briefly made Count of Cornwall (maybe we should make him so?) but rebelled against William in 1075. Prehaps Alan should be made a friend with William?
Also: Brient is listed as the fourth son of Eudas. So this needs correction too.
If it is possible following the eventual rebellion of Northumbria he should be made count of York (representing Richmond).