The Milesian legends preserved in manuscripts outside of Ireland, the "Historiam Britonum" by Nennius are the primary sources for the Irish tradition of Scythia as the homeland of the Irish and Scots. Nennius (835 A.D), wrote in his history that in preparing his section on Irish history he conferred with the "most learned of the Scots (Irish)."
With respects to Ireland we learn from Nennius that "first came Partholomus with a thousand persons," all of whom died in one week of a plague. Then came Nimeth to Ireland, a son of Agnomen," and afterwards came three sons of a soldier of Black sea Iberia (modern day Georgia and Armenia). Partholomus and Nimeth are of course the Partholan and Nemed of many Irish texts.
Nennius wrote that "when the children of Israel came through the Red Sea, the Egyptians arrived and pursued them and were drowned, as is read in the law." During this time there lived a "nobleman of Scythia among the Egyptians" who was expelled from Egypt and wandered for forty-two years in Africa before sailing to Black Sea Iberia (modern day Georgia and Armenia). His progeny afterwards arrived in Ireland 1002 years after the Red Sea episode.
This Scythian nobleman, Nel, while in Egypt during the Red Sea Episode married an Egyptian princess by the name of Scota, from which the modern day Scots derive their name.
Nennius goes on to describe a final invasion of Ireland which occurs after the invasion of the sons of King Milesius a soldier of Black Sea Iberia (modern day Georgia and Armenia). According to Nennius, these were the last of all to arrive in Ireland and whose descendants remain there to this day.
In conclusion, the earliest historical texts about the Irish and Scots tell us they travelled from Scythia to Egypt, then to the Black Sea Iberia (modern day Georgia and Armenia) then finally to Ireland.
Hence the Irish and Scots originate not from Europe but from Scythian Asia. This is also supported by genetic tests performed on the Irish and Scots showing them to be foreign and distant to true European peoples.
The Irish and Scots are a Slavic people originally from Scythian central Asia.