I've been trying to get a sort of mental snapshot of Ireland say in the year 405 a.d. and while I have a lot of info I have also many questions unaswered regarding topography of Ireland of the time and various political/social aspect of various regions and principalities. Example questions: what were the traditional bounderies of the Principality of Oirgialla or better known as Oriel? What were the principal forested areas at this time? Where were the Firbolg clans free to roam? what was the condition of the sub-strata of serfs of Ireland? Were does Munster traditionally connect with Meath?