The Origins of the Irish says that ‘recent studies of the DNA of some of the native Irish fauna... reveal that they are much closer to species found in Spain than to those now found in Britain’. Compared with Britain and the Continent, Ireland would have been regarded as impoverished with respect to potential food supplies. The earliest colonists in Ireland found a land lacking in many of the resources of neighbouring regions and had to import resources and devise distinctly local strategies in order to survive. Mesolithic Ireland simply lacked any wild cereal that could be domesticated and there is no evidence that any wild cattle were present in Ireland during the Mesolithic period.
Among the purported foreign objects there is one everyone agrees must have come from abroad; in the Iron Age levels of Navan fought were found the remains of the head and jaw of a barbery ape, an animal that was hardly native to Co. Armagh.
The native Irish version of history taken from the Book of Invasions (Lebor Gabole Erenn) was that the Gaels (Irish) descended (their name derived) from Gaedel Glas, whose mother (incidentally the daughter of an Egyptian pharaoh) Scotta gave her name to Scotti (Irish). The Sons of Mil –’soldiers of Spain’ were descendants of Gaedel Glas and described Ireland as rich in acorns, honey, wheat and fish, with a balanced climate. The geneticist Stephen Oppenheimer notes that a series of genetic expansions from Iberia is still consistent with the narrative in Lebor Gabole Erenn, The Book of Invasions.
Isadore of Seville wrote that Ireland ‘is an island next to Britannia [but is] ...more fertile’. Perhaps this is why the potato grown in Ireland has a more dry, fluffy and floury texture compared with the English variety that has a wet and waxy texture.
The ancient Irish had a concept that kingship comprises selection by a female goddess of sovereignty and both the Irish and Gauls believed that their ancestor was the god of the dead. We also find the idea of the ancestor of mankind serving as the lord of the dead to whom the dead are called in the religion of the early Indians and Iranians. While geographically distinct both the Indians and Iranians belong to the same language family as the Irish, and many members of this language family, Indo European either share the same names for some of the deities or describe them in such a way that we expect that they were all derived from the same ancestral form.
The largest physical type in Ireland in the 1930s was those with dark hair, blue eyes and long heads, but there were also other types such as Nordic Mediterranean and Dianerics (Southeast Europeans) which were the findings of a Harvard University mission. Attempts to compare the teeth of Irish people with a world database found Ireland most similar to populations in North Africa, Western Europe, India and even East Africa. The Irish and Scots are found to occupy a single periphery branch of the genetic tree whereas the English were subgrouped with the Dutch and Danes and somewhat more distantly with the Swiss, German, Belgians and Austrians i.e. broadly the same geographical and linguistic group. Generally Ireland was found to be closely linked with Scotland (and Wales when the data was included) but not to possess markedly clear connections with other Europeans other than Iberia.
Often one imagines that a small foreign population may have assumed leadership and brought about language change. When this happens there is no expectation that the process of language shift be accompanied by a high degree of genetic admixture, although this can of course sometimes also be the case.
There is an Irish saying that ‘there is no country without a language’ and In the 17th century there were much more massive plantations of English speaking settlers and a combination of restrictive laws against the Irish language, the confiscation of Irish lands and the later introduction of an English based school system , coupled with the famine, all played a part in reducing the numbers of Irish speakers.
Old Norse and old English were two branches of the same family tree. The closest language to English is Fresian a language spoken in the north of the Netherlands and adjacent area of northern Germany. The next closest is low German.
Indo European languages share a series of common words for domesticated plants and animals as well as some of the material culture associated with agriculture. This includes the names for animals introduced into Ireland at the beginning of the Neolithic. For example there are several words associated with a cow in Irish that are cognate (i.e. share the same ancestral word) with the names for these same animals in other Indo European languages, eg old Irish ‘dam’ bull and Sanskrit ‘damya’ young bull.
The Neolitihic woman found in Ireland(c3300-3000 BC) revealed a predominantly Near Eastern origin and she was, as so many other Neolithic samples are, most similar to a modern Sardinian, who has become the genetic archtype for the first farmers in the Meditterenean and Atlantic Europe, She had dark brown hair and brown eyes.
The 3 males also found in Ireland (c2000-3000 BC) had light coloured hair and brown eyes whose ancestors lay in the distant steplands of the Ukraine and Southern Russia.
A minority of Irish genes carry a legacy derived from the spread of the first farmers from the Near East and analysis of the genetics of modern Irish populations suggest that some of them derived from South West Asia.