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Dál Cuinn Group

Céad Míle Fáilte!

(A Hundred Thousand Welcomes!)

This is the home of the Dál Cuinn Group genetic genealogy project. We are a dedicated group of people interested in the heritage of those family groups who historically descend from Conn Cétchathach, or Conn of the Hundred Battles. From the Irish annals, he was a High King of Ireland who lived ~125 AD. From him descend many of the important medieval dynasties of the northern half of Ireland, which was known as the Leath Cuinn, or the Half of Conn.

Two of the most well known Dál Cuinn dynastic groups are the Teóra Connachta and the Uí Néill. The Teóra Connachta were composed of the Uí Briúin, the Uí Fiachrach, and the Uí Ailello; this last dynasty either dying out or being exterminated in the first millennium AD.

All four of these dynasties were originated by one of the sons of Eochaid Muigmedón, who was descended from Conn Cétchathach and also a High King of Ireland ~350 AD. The Uí Briúin descend from Brión, the Uí Fiachrach from Fiachra, and the Uí Ailello from Ailill. These three men were full brothers from Eochaid Muigmedón’s first wife Mongfind. The Uí Néill descend from Niall Noígíallach, or Niall of the Nine Hostages. He was the paternal half-brother of Brión, Fiachra, and Ailill from Eochaid Muigmedón’s second wife Cairenn Chasdub.

The Y-DNA results that we have seen so far indicate that the R1b-DF104 phylogenetic node is the starting clade (Y-haplogroup) of the Dál Cuinn. The median age estimate for R1b-DF104 places it ~36 AD. This is a little before Conn’s time frame, so there may be subclades of R1b-DF104 that are not Dál Cuinn; but R1b-DF104 is the closest major clade with an origin near to the time frame of Conn, so it was decided to be overly inclusive rather than overly exclusive. The conclusion to associate the R1b-DF104 clade with the Dál Cuinn is based on the numerous Connachta surnames in the publicly available R1b-DF104+ test results that genetically correlate with the historical Irish genealogies and annals for the most part. As of , there are almost 1200 known R1b-DF104+ men.

This assumption of the R1b-DF104 clade being the starting point for the Dál Cuinn does eliminate two dynasties long attributed as part of the Dál Cuinn: the Uí Maine and the Clan Colla, the descendants of The Three Collas. Please visit Peter Biggins’s excellent website for a detailed explanation of the Clan Colla and quick highlight of the Uí Maine Y-DNA. Essentially, both of these kindred groups split off from the lineage that produced the Dál Cuinn long before the Dál Cuinn themselves existed. Y-DNA test results show they split off before the R1b-M222 phylogenetic node occurred, which is estimated to have happened as early as ~554 BC, with a median time frame of ~139 BC; well before the time frame of Conn Cétchathach.

We solicit the participation of all R1b-DF104+ men, as well as anyone who is interested in our research, and invite you to join our activities in our Family Tree DNA (FTDNA) home project, Sons Of Aodh; or in our Facebook Group. We are using modern surnames and Y-DNA SNP test results to attempt to fit what the science of genetics reveals into the rich heritage of the historical Dál Cuinn genealogies. Through our efforts, we are constantly expanding the R1b-DF104 Cladogram as our genetic testing data and knowledge grow. Thank you for visiting our website and we hope to see you in our discussions and genetic testing activities.

In Memoriam

We present the following roll call to honor our fallen pioneers:

    • Orville Douglas Clarida, - AD
    • Phillip Dean McDaniel, - AD
    • Robert Warren McDaniel, - AD
    • Dan Francis Murphy, Sr., - AD
    • Lawrence Michael Murray, - AD


All data used on this website is taken from public sources and is used under the USA fair use legal doctrine which allows the use of publicly released information for research and scholarship purposes, regardless of copyright, and especially if the usage is transformative, which this usage is.