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CLARK Family History

Clarke is an Irish surname from County Galway that spread to County Donegal and County Dublin. The name is derived from the Irish Gaelic sept O'Cleirigh, meaning "clerk". There are variants, including Clark. Clarke is an uncommon given first name. Clarke is also an English surname of Anglo-Saxon origin, first recorded in Kent in the early 12th century.

In terms of current geographic spread of the clan, this Irish surname is the 32nd most prevalent surname in Ireland, and it can either by of native Irish Gaelic stock, from O Cleirigh, denoting descent from Cleireach. Mainly found in Galway, Cavan, Limerick, and Donegal, Clarkes are descended from Guaire the Hospitable, the famous Irish king of Connacht. They can also be Anglo-Irish, and, in this case, found in Antrim and Louth. (Keller Clark)

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Anthony Barrett

(Part 1 of 3) The Clark name has a long history in Ireland, but now DNA and some recorded history says its origin is from the north-west region of the Emerald Island. The Clark story [dominated by DNA tribal marker R1b-L513, Subgroup D2] can trace their beginnings to the Finn Valley in Donegal, Ireland from 50 BCE. Perhaps the journey begins with the Clanna Dedad; Deda, son of Sen or Deda Mac Sin. The Clark surname origin is from the Cenél Conaill [R1b-L513, Subgroup D] who found the Dál Fiatach.

Anthony Barrett

(Part 2 of 3) A group will also found the Kingdom of Ercing in Wales as trade with Romans will become essential around 300 CE. But how could this be? Recent discoveries from DNA testing are unlocking the migration patterns of Celtic tribes as late as 800 CE to 1200 CE. The Clark story begins in pre-history Ireland but this line and many of his kin will move to Wales, then travel to Brittany, France during the Dark Ages.

Anthony Barrett

(Part 3 of 3) Discover their newly found untold story and how forgotten texts bring their story back to life. From the ebook, “The Tribe Within” learn how DNA unfolds this amazing tale and if you look in the right places, how history narrates this evidence. There is another written account of their story, but it is camouflaged in smoke and myth – it will become the tales of King Arthur. Come follow in the footsteps of Deda Mac Sin and visit

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