So those people talking about Brythonic (p or q - does not matter) Gaelic as if they are Druids and not merely a local pagan group might some day get a glimpse of a real history rather than a family legend mixed with power rituals. In that case, if they cared for the truth, they might want to know more from DNA. Perhaps they should remember these words.
"Whether or not it is clear to you, the universe is unfolding as it should..." Desiderata
But there are ways your control of every part of your existence are formed and you know so little about them. This is especially true if you fear things you do not understand. (Including even yourself or SELF.) One of the major tools forming people today is games. And when I saw Lucis Trust (Luciferians) and Damanhur (Alchemists) working on those games and developing ways to inculcate new thinking through them (Later Harry Potter took the stage.) I was happy and concerned at the same time. Isaac Bonewitz is an OK occultist and his following work is worth reading. In it you will find words have much power.
The Gaels or Gaedhils are the Milesians like ML-chhi-zadok and Brian Boru who the Kennedy family trace their roots to. Thus one can honestly say Camelot in Massachusetts is as real as the one in Glastonbury or Lyoness. They include Columbanus and Columcille (St. Columba) if you look under Gaedhil at Wikipedia. Thank god we have DNA now - it was a lot harder to prove my history and that of MacDari (The Masonic linguist whose book Irish Wisdom I spent twenty years researching after given the task to re-write it by my Ogham mentor.) before DNA. Due to the destruction of books and efforts to deny the truth of earlier culture called Atlantean by some, I had to scour every science and technology. The likes of Fin and his Fianna turned into real people as the years went by and other scholars were finding out that the Phoenicians are what we might call Atlanteans just as Plato did. Along the way I learned why I was selected - my last name is more than merely a Bard or Druid, and I am named after the man who reformed the Templars as the Societas Rosicruciana en Anglia. The Hibernians of Robert de Bruges and Royal Society of the Stuart (Hatti and Hittite) Kings and Newton et al. My father had a lot of knowledge and a few legends of our family but it took far more to accept my burden than mere wives' tales. We have the Song of Amergin which includes Ogham under the Robert Graves thread and Meritaten mentioned here is very important in the story of Miriam or the Phoenician Hiram (through code and reversal).
"In their own national epic contained within medieval works such as the Lebor Gabála Érenn, the Gaels trace the origin of their people to an eponymous ancestor named Goídel Glas. He is described as a Scythian prince (the grandson of Fénius Farsaid), who is credited within creating the Gaelic languages. Goídel's mother is called Scota, described as an Egyptian princess (some modern writers associate her with Meritaten). The Gaels are depicted as wandering from place to place for hundreds of years; they spend time in Egypt, Crete, Scythia, the Caspian Sea and Getulia, before arriving in Iberia. It is here that their king, Breogán, is said to have founded Galicia.
The Gaels are then said to have sailed to Ireland via Galicia in the form of the Milesians, sons of Míl Espáine. The Gaels fight a battle of sorcery with the Tuatha Dé Danann, the gods, who inhabited Ireland at the time. Ériu, a goddess of the land, promises the Gaels that Ireland shall be theirs so long as they give tribute to her. They agree, and their bard Amergin recites an incantation known as the Song of Amergin. The two groups agree to divide Ireland between them: the Gaels take the world above, while the Tuath Dé take the world below (i.e. the Otherworld).
Advances in DNA studies have revealed some clues about the origin of the Gaels (who are associated with paternal R-L21). Haplogroup R originated 26,800 years ago in Central Asia during the Last Ice Age. The R1b branch had broken off by the Paleolithic and it's derivative R-M269 was found at the Pontic-Caspian steppe by the Chalcolithic (the Kurgan hypothesis makes these speakers of Proto-Indo-European). First entering Europe proper 7,000 years ago, the Indo-Europeans developed bronze weapons and domesticated the horse, giving them the upper-hand in their conquest of the Old Europe and the proliferation of their lineages. After the R-L51 subclade founded the Unetice culture, a derivative R-L21 moved West arriving in Britain c. 2100 BCE and Ireland c. 2000 BCE, becoming the Gaelic people."