For What its worth heres my family tree up to the mid 1700's. Using several sources including The Bible, The Annals of Clonmacnoise, O'Hart's Irish Pedigrees and the Web, I have put together a Father - Son Pedigree up to Aodh Buidhe (Hugh Boy). Please treat this with the skepticism it deserves.
Adam Seth Enosh Kenan Mahalel Jared Enoch Methuselah Lanech Noah Japhet Magog Baoth Fenius "the Antiquary" King of Scythia Nial or Niul who was married to Scota, the daughter of Pharaoh Cingris, who drowned in the Red Sea when Moses rejoined the parted waters after the Israelites had made good their escape. Gael Asruth Heber Scot Beman Ogaman Tait Agnon Lamhflonn Heber Glunflonn Agnan Fionn Febric Glas Nenal Nuadhat Alladh Dea Brath Breogan Billius Milesius or Miledh of Esbain, King of Spain, married Scota, daughter of Pharaoh Nectonibus of Egypt and sister in law of King Solomon. She was killed in Ireland fighting with her sons against the Tuatha de Danann. From his name we get the term "Milesians" which was often used to describe the Celts in Ireland. However, his real name was Gallamh. Milesius being more of a nickname, meaning warrior. From Scota we get the terms Scotus and Scotia, early Latin terms for "Irishmen" and "Ireland" (which later became Hibernia). When the Romans looked north across the border from Britain, they observed a land mainly inhabited by the Irish and so it got its modern name - Scotland. It is said that seven sons of Milesius set out to conquer Ireland, but only two survived the conflict. Eremhon Originally claimed the northern half of Ireland as his domain, leaving the southern half for his brother Emher. Emher was ambitious, however, and died trying to take possession of the entire island from Eremhon thus leaving his brother in sole charge, thereby becoming the first High King or Ard Rí and establish his throne at Tara. He gave the province of Ulster to Emhear, son of Ir; Munster to the four sons of EmhearFinn; the province of Connaught to Un and Eadan; and the province of Leinster to Crimhthann Sciathbhel of the Damnonians. Irial Faidh Eithrial Follac Tighearnmas "It was by Tighearnmas also that gold was first smelted in Ireland, in Foithre Airthir Liffe. It was Uchadan, an artificer of the Feara Cualann, that smelted it. It was by him that goblets and brooches were first covered with gold and silver in Ireland. It was by him that clothes were dyed purple, blue, and green. It was in his reign the three black rivers of Ireland burst forth, Fubhna, Torann, and Callann, their names. He died, with the three fourths of the men of Ireland about him, at the meeting of Magh Slecht, in Breifne, at the worshipping of Crom Cruach, which was the chief idol of adoration in Ireland. This happened on the night of Samhain precisely. It was from the genuflections which the men of Ireland made about Tighearnmas here that the plain was named." Eiobiothad Smiorgall Fiacha Labhrainne Aengus Olmucadha Maen Raitheachtaigh Deman Dian Sirna Saeghlach Olioll Olchain Giallchaidh Nuadhat Finnfail Created a formalised legal system, probably the precursor of the Brehon Laws. Devolved power under the High King to provincial chieftains. Instigated the great Festival of Tara at which all the nobility, bards, ollamhs, story tellers, musicians, etc. got together for fun and frolics. Aedhan Glas Simon Breac Murchad Bolgrach Fiacha Tolgrach Duach Ladrach Eochaidh Buadhach Ugaine Mór, married Kesair Cruithach, daughter of the King of France and ruled much of wester Europe as well as Ireland. "This Ugaine was he who exacted oaths, by all the elements visible and invisible, from the men of Ireland in general, that they would never contend for the sovereignty of Ireland with his children or his race." Cobhthach Cael Breagh Melghe Molbhthach Irereo Connla Caemh Oilioll Caisfhiaclach Eochaidh Ailtleathan Eochaidh wore his hair long to cover his deformed ears (he supposedly had the ears of a horse). Once a year he had a haircut, given by a yong boy selected at random, who was afterwards killed to preserve the secret. One year, a particular youth who had been chosen, persuaded the king to spare him, under an oath that he would never reveal the secret to another person. Well, the burdensome secret weighed so heavily on the boy that he fell ill. On the advice of a Druid, he whispered the secret to a willow tree and was thus unburdened. Soon afterwards, the tree was felled to make a new harp for the musician Craftiny. The harp had its first airing at the royal court where it sang the words "Two horse's ears hath Eochaidh of the Long Hair". Once the secret was out, the king was relieved rather than angry and there were no further deaths on account of his ears. Aenghus Tuirmheach Teamhrach Enna Aighneach Lavra Beotact Blatact Esamon Roignen Rua Finlogha Finn Eochaidh Feidhleach Finn Lughaidh Sriabh nDearg Crimhthann Niadhnair (1 A.D.) Fearadhach Finnfeachtnach (15 AD..) Fiacha Finnfolaidh. Created the king's guard known as Na Fianna, about whom many stories were told. Tuathal Teachtmhar Feidhlimidh Rechtmhar Conn of the Hundred Battles (Hight King 123-157 A.D.) Art Cormac Mac Art "The fleet of Cormac sailed across Magh Rein (i.e. across the sea) so that it was on that occasion he obtained the sovereignty of Alba (Scotland)." In 266AD Cormac choked on a salmon bone and died. Cairbre Liffeachair Fiacha Sraibhtine Muireadhach Eochaidh Muighmheadhoin conducted slave raids on Britain during one of which he carried off and married, Carthann Cas Dubh, a princess of the Britons with whom he had a son. Niall Naoigiallach (of the Nine Hostages) took the throne as the 126th High King of Ireland in 379 and reigned until 405 AD. He led many raids on adjacent countries and his habit of taking royal hostages earned him his nickname. His first wife was Inné, mother of his son Fiacha, from who the Geoghegans are descended. He also had seven other sons with his second wife, Roighnech. It was during one of these raids that he reputedly captured the future St. Patrick and brought him to Ireland to be sold as a slave. Patrick, after his escape, saw the people of Ireland calling to him in a dream and, having been ordained a bishop, was sent by Rome, ay his own request, to convert the Irish to Christianity. Fiacha or Fiach who took control of a large tract of land in modern Westmeath and his descendants were known as Cineal Fhiachaigh, anglicised as Kenaleagh or Kenalea and by this name their territory was known until Elizabethan times, when it was made into the Barony of Moycashel.
The following is extracted from O'Hart's Irish Pedigees, a publication known to be strewn with inaccuracies. Therefore I urge the reader to use the information with caution
Tuathal: whose brother Eochaidh was ancestor of Molloy, and brother Uigin, the ancestor of Higgins. Amhailgadh (possibly hence McAuley) Coscrach (possibly hence McCosker) Eochagáin (possibly hence MacEochagain - Geoghegan) Rory Awly (possibly hence McAuley) Giollacolum Creamthann Eochaidh Florence Awly (possibly hence McAuley) Donoch Congal Anluan Coscrach (possibly hence McCosker) Malachi Murtach Congal Cucogar Cucalma Murtach Congal Congal Donoch Congal Murtach Mor Donoch Dermod Aodh Buidhe (see main text above for more modern information)
-------------------------------------------------------------------------------- The above text was compiled by Eddie Geoghegan in September 1997; updated: July 1998, March 1999 and March 2000
The main source document which accounts for the majority of the content is a transcript of a lecture entitled "The Mageoghegans" delivered by Liam Cox NT, Moate, delivered to the Kilbeggan Historical and Archaeological Society, in the Convent of Mercy School, on Friday night, 10th January 1969. Other information was taken from "Irish Families. Their Names, Arms & Origins", by Edward MacLysaght, published by Irish Academic Press, ISBN 0 7165 2364 7 and from "Worthies of Westmeath" by Jeremiah Sheehan, published by the author and Wellbrook Press Ltd. I also added material from my own memory. Such material came from books and other documents I have read which are no longer in my possession. A very small amount of the material came to me in the time honoured Irish way - by word of mouth.