Quick clarification the O'Lorcain of the Barony of Forth where alien (Ui Muireadaig) overlords. Back to the main point M222+ population is commonly assumed to be the descendants of Conn of a Hundred Battles, i.e. Dal Cuinn - the Ui Neill, Ui Briuin, Ui Fiachach and Ui Ailella plus their associated allies of Clan Colla and Ui Maine. However the M222+ O'Nuallain of Carlow do not claim to be Dal Cuinn, instead they claim to be Ui Eoghain Fhinn-Fothaidh. Eoghan Finn and Fiacha Suigdhe (said to be brothers to Conn of Hundred Battles) are said to have lead the Dessi on a war of expansion into Wales and Leinster, while later settling on the Munster border. The Eoghan Finnn descendants are people called Ui Fothaidh and Ui Eoghain Fhinn and have baronies across Leinster named for them. They and the Dessi seem to have occupied all of Co. Waterford and most of of Co. Tipperary. (Note: Co. Clare is remembered as originally belonging to the descendants of Conn, the Dal Cuinn held onto northern Co. Tipperary.) The title given for the O'Meara of Rosarguid as chiefs (overlord) of Ui Fathaidh, Ui Neill, and Ui Eochaidh Finn is interesting for the Ui Fathaidh and Ui Eochaidh Finn are identified with the Ui Eoghain Fhinn Fothaidh descentants of Waterford/Tipperary. (The chiefs of the Dessi claim descent from Conn's and Eoghain Finn's other brother Fiacha Suigde.) I wonder if native famlies of Ui Fothaidh and Ui Eoghain Fhinn can be found that they will test M222+? >From Wikipedia: "Déisi Muman The Déisi Muman were a prominent enough power to form their own regional kingdom in Munster from a fairly early date. In a recent title, Paul MacCotter states "The regional kingdom of Déisi Muman must have existed in roughly its present location from a very early period. Ogams dating perhaps from the fifth century record unique first names associated with its kings."[4] According to Francis John Byrne, there are certain inscriptional hints that both the Eóganachta and their Waterford Déisi vassals may have been of fairly recent Gaulish origins.[5] " [There was somewhere an idea that Eogan (founder of the Eoganachta) came to Ireland with the Second Mil Espaine (i.e., the founder of Dal Cuinn, plus Ui Eoghain Finn-Fothaidh and Dal Fiachach Suidge).] Possible presence in Britain "The Déisi Muman are the subjects of one of the most famous medieval Irish epic tales, The Expulsion of the Déisi.[11] This literary work, first written sometime in the 8th century, is a pseudo-historical foundation legend for the medieval Kingdom of Déisi Muman, which seeks to hide the historical reality that the kingdom's origins lay among the indigenous tributary peoples of Munster. To this end it attributes to "the Déisi" an entirely fictive royal ancestry at Tara.[1] The term "Déisi" is used anachronistically in The Expulsion of the Déisi, since its chronologically confused narrative concerns "events" that long predate the historical development of déisi communities into distinct tribal polities or the creation of the kingdom of Déisi Muman.[3] The epic tells the story of a sept called the Dal Fiachach Suighe, who are expelled from Tara by their kinsman, Cormac mac Airt, and forced to wander homeless. After a southward migration and many battles, part of the sept eventually settles in Munster. At some point during this migration from Tara to Munster, one branch of the sept, led by Eochaid Allmuir mac Art Corb, sails across the sea to Britain where, it is said, his descendants later ruled in Demed, the former territory of the Demetae (modern Dyfed). The Expulsion of the Déisi is the only direct source for this "event". The historicity of this particular passage of the epic apparently receives partial "confirmation" from a pedigree preserved in the late 10th-century Harleian genealogies, in which the contemporary kings of Dyfed claim descent from Triphun (fl. 450), a great-grandson of Eochaid Allmuir, although the Harleian genealogy itself presents an entirely different version of Triphun's own ancestry in which he descends from a Roman imperial line traced back to St. Helena, whose alleged British origin the genealogist stresses.[12] This manifest fiction apparently reflects a later attempt to fabricate a more illustrious and/or indigenous lineage for the Dyfed dynasty, especially as other Welsh genealogical material partially confirms the Irish descent of Triphun.[13] If the relocation of some of the "Déisi" to Dyfed is indeed historical, it is unclear whether it entailed a large-scale tribal migration or merely a dynastic transfer, or both as part of a multi-phase population movement.[14] However this movement is characterised, scholarship has demonstrated that it cannot have taken place as early as the date implied in The Expulsion of the Déisi (i.e. shortly after the blinding of Cormac mac Airt, traditionally dated AD 265), but must have begun during the second half of the 4th century at the earliest,[15] while commencement in the sub-Roman period in the early 5th century cannot be excluded.[16] It is further entirely possible that the historians and genealogists of the Déisi Muman were guilty of lifting these "verified" ancestors, who could have originally belonged to another Irish kindred entirely. " [The problem with it identification of "lifting of ancestors" is the O'Nuallain of Ui Fothaidh have actual turned out to be M222+, like the Dal Cuinn.]