901 - 910 AD

901 AD *104.Flann Sinna the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 169th King of Ireland, who was a descendent of *93.Diarmait mac Carroll / Cerbaill the previous  Gaelic Milesian 133rd King of Tara / Ireland, commemorated his ancestor's involvement in the original construction of the monastery at Clonmacnoise in Co. Offaly in the north - west of Southern Leinster by erecting the Cross of the Scriptures there.

902 AD 103.Finguine Cenn nGecan the  Gaelic Milesian Heberian Eoghanacht Chaisil 30th King of Cashel / Munster, died, who was a son of 102.Leary / Laegaire, one of the 2 sons of 101.Dub Da Bairenn, the son of 100.Crundmael descended from 96.Colgan / Colgu the previous 15th King of Cashel / Munster, descended from 85.Eoghan Mor (Eoghanachta) and *37.Eber Fionn (Heberians). 

     102.Cormac mac Cuilennain became the very reluctant Heberian Eoghanacht Chaisil 31st King of Cashel / Munster as he was a very pious man and historian and did not want to take up the position, but was pressured into accepting it as he was previously a Bishop (supervisor) of the Celtic Catholic Church and skilled in Irish literature, Latin, Greek, Welsh, Anglo / Saxon and the Norse languages and he was to also try to restrict the Heremonian Dal Cuinn Ui Niaill Septs to their territory in Leath Cuinn / Conn's Half and also was to try to stop them from continuing to gain the High Kingship over all of the other Gaelic Septs in Ireland. He was not from one of the prominent Heberian Eoghanacht dynasties who had previously reigned up until this time, although he was an aristocratic Chaisil Prince / Tanaiste. Flaherty / Flaithbertach mac Inmainen from the Heremonian Ui Conaire Muscraige Sept was the Abbot of Inis Cathaig who acted as his back up, and he was to follow after him as the Heremonian 32nd King of Cashel / Munster, and was to be the only one and the last one to be a cleric. It was only during the Viking raids that the Irish Kingships and religion became so involved, and even then this was only in the southern half of Ireland in Mogha's Half /  Leath Mogha. 102.Cormac mac Cuilennain's Chaisil aristocratic warrior male line also emanated from 89.Conall Corc the original 1st King of Cashel / Munster, through another of the 3 sons of 91.Angus / Oengus mac Nad Froich who had originally been the Chaisil 3rd King of Cashel / Munster, and it was to be through 92.Bressal, whose male line had never previously left a King of Cashel / Munster at all and who was 11 generations back. After the demise of 102.Cormac mac Cuilennain in the future they would never leave another. 102.Cormac mac Cuilennain because of his genuine piety and as the Archbishop of Cashel was especially selected at this time to lead the Eoghanachta through the particular troubled times that they were by now experiencing, due to the disruption to the Irish Brehon Law caused by the continual Viking incursions. 102.Cormac mac Cuilennain, was a son of 101.Cuilennan, a son of 100.Selbach, a son of 99.Ailgile, a son of 98.Eochy / Eochaidh, a son of 97.Colman, a son of 95.Dunchad, a son of 95.Dub Indrecht, a son of 94.Furudran, a son of 93.Eochy / Eochaidh, a son of 92.Bressal the son of 91.Angus mac Nad Froich, the son of 90.Nad Froich, one of the 7 sons of 89.Conall Corc who was descended from 85.Eoghan Mor (Eoghanachta) 84.Ailill Oluimm the 1st King of Munster and *37.Eber Fionn (Heberians.)

     102.Cormac mac Cuilennain the Heberian Eoghanacht Chaisil 31st King of Cashel / Munster was to inform 103.Larkin / Lorcan / Finghin who was now the Heberian Dal gCais Ui Bloid Ui Turlough Prince / Tanaiste / heir apparent of the Dalcassians, that they both traced to 84.Ailill / Oilioll Oluimm, the son of 83.Mogha / Mug Nuadhat the original Heberian King of Southern Ireland / Mogha's Half. 103.Lorcan had previously routed and captured their common enemy, *104.Flann Sinna who was now the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 169th King of Ireland, when he was previously the Prince / heir apparent / Tanaiste to the overall Kingship of Ireland, after he had debased the Dal gCais Inauguration Mound of Magh Adhair in Co. Clare, He also advised him of the original decree that had been set down by their common ancestor, 84.Ailill Oluimm who was then the 1st Heberian King of Munster, that the Munster Kingship was to be alternated between the descendents of his 2 older sons, 85.Eoghan Mor (Eoghanachta) and 85.Cormac Cass (Dal gCais) He also told him that previously 7 Heberian Kings, who were the descendants of 85.Cormac Cass - of the Curly Hair, the direct male line ancestor of the Heberian Dal gCais Sept had previously been Kings of Munster before the Eoghanachta had completely taken over the Munster Kingship and this information was to have a great effect on the Dal gCais Sept later on under 103.Larkin's / Lorcan's son, 104.Kennedy / Cennetig who with this new found knowledge would try to redefine this, and because  of this one of his sons, 105.Mahon would become the 39th King of Cashel / Munster, and another *105.Brian Boru - of the Tributes the 41st King of Munster and the Gaelic Milesian 175th High King of Ireland.  

       The Vikings who were now under increased pressure from the combined efforts of the Irish Kings and their Chiefs withdrew once again from their settlement in Dublin in Co. Dublin in the north - east of Southern Leinster, with the Heremonian Dal Cuinn Ui Niaill now under *104.Flann Sinna the Gaelic Milesian Heremonian 169th King of Ireland in charge, and they retreated from out of Ireland going across to Northern Wales. By this time the most important churches, which included Armagh in Co. Armagh in the south - east of the Ulster Province were now associated with the dominant Heremonian Dal Cuinn Ui Niaill Septs giving them advice and promoting their overall Ui Niaill interests.

903 / 908 AD 107.Kelly / Ceallach, the son of 106.Carroll / Cerball), the previous outstanding Heremonian Ui Laoghaire Ui Connla King of Ossory, who had his territory in Co. Kilkenny in the south - west of Southern Leinster was killed this year in the Battle of Bealach Mughna and 107.Dermot mac Carroll / Diarmait mac Cerbaill became the new King of Ossory until 928 AD, who was another son of 106.Carroll.   

904 AD Colman the Abbot of Clonmacnoise in Co. Offaly in Southern Leinster founded Teampall Finghin this year in Co. Longford in the far north - west of Northern Leinster.

905 AD  The Vikings overran the fortress of 102.Cormac mac Cuilennain the Heberian Eoghanacht Chaisil 31st King of Cashel / Munster, situated on the Rock of Cashel in Co. Tipperary in the north - east of the Munster Province, so the Irish National Assemblies / Oenachs were then to be held at Glanworth in Co. Cork in Southern Munster.

905 AD Clonmacnoise (The Meadow of the son of King Nois) monastery situated in Co. Offaly in the north - west of Southern Leinster, on the River Shannon there, was now a great learning centre of Irish culture, where the teachers there had higher skills than others in Astronomy, Geography and Philosophy, which was also conducted in conjunction with the monastic schoo and it was also noted by Alfred the Great the Saxon King of Wessex, and Charles the Great at Aix - la - Chapple - Aachen.

907 AD 102.Cormac mac Cuilennain the Heberian Eoghanacht Chaisil 31st King of Cashel / Munster still hoping to stem the ambition of the Heremonian Dal Cuinn Ui Niaill Septs to remain the overall High Kings of Ireland, put a fleet on the River Shannon, and besieged their territory in the Midlands / Meath / Midhe in Northern Leinster and also in the Connacht Province were he took hostages and was able to defeat their forces there.   

904 / 908 AD By this date due to the lack of any real continuity of any overall total leadership in Ireland, and due to their Celtic outlook, and the struggles now occurring among the Irish Gaelic Chiefs in their battle for the survival of the fittest, there was a great amount of infighting occurring among the various Septs and the Vikings took this opportunity to gain back all the towns they had previously lost with Erik Blood Axe, the son of King Harald Harfagra of Norway, now among the raiders, while Sitric the previous Viking King in Dublin also regained Dublin back in the north - east of Southern Leinster, which then also gave the Vikings access and some further control into the Midlands / Midhe in Northern Leinster and also nearby into the south of Ireland in Mogha's Half.

   102.Cormac mac Cuilennain the Heberian Eoghanacht Chaisil 31st King of Cashel / Munster besieged Southern Leinster to extend the overall authority of the Heberians once more in Mogha's Half over the Heremonian Ui Laoghaire Ui Lughaidh Cu Corb Septs there and *104.Flann Sinna / Siona the  Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 169th King of Ireland was to assist 107.Carroll mac Muirecain the Heremonian Cu Corb Ui Dunlainge Ui Faelain 34th King of Leinster, who was now his son in law, and to also assert his right to the presentation to the church of Mainistir Eibhin / Monasterevin in the Co. Laois, which up until now had belonged to Munster. Accompanied by 107.Carroll mac Muircain, *104.Flann Sinna and their combined forces marched to Bealach Mughna / Magh Ailbhe / Ballymoon in the south of Co. Kildare 2 mile out of Carlow in Southern Leinster where they were met head on by 102.Cormac Mac Cuilennain and the Septs of Munster. The combined forces of the Heremonian Dal Cuinn Ui Niaill, and the Heremonian Ui Laoghaire Septs of Leinster were to be successful in this battle that occurred near Leighlin Bridge and 102.Cormac mac Cuilennain was killed. This defeat severely devastated the Heberian Eoghanacht Septs in the Munster Province, and *104.Flann Sinna the  Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 169th King of Ireland had also previously submitted his Heremonian Dal Cuinn kinsman 107.Cathal the Heremonian Dal Cuinn Ui Briuin Ai 41st King of Connacht, and the Heremonian Dal Cuinn Ui Niaill supremacy over Ireland was now once again on the up and up. 102.Cormac mac Cuilennain during his lifetime, acting in his role also as a historian had previously compiled the Saltair of Cashel, a historical book that still existed up until 1454 AD, but is now also lost.

      107.Carroll mac Muirecain the Heremonian Ui Laoghaire Ui Lughaidh Cu Corb 34th King of Leinster was wounded in the battle and he returned to Naas were he described to his wife, 105.Gormley / Gormlaith in detail how he had cut off the head of 102.Cormac Mac Cuilennain, to which she strongly objected to what he had done to such a holy man and in a further rage of jealousy he pushed her to the floor insulting her in front of all those present and she fled to her father, *104.Flann Sinna the  Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 169th King of Ireland, for protection, but he only sent her back to 107.Carroll mac Muirecain. *104.Niall Glun Dubh - of the Black Knee, who was her Heremonian Dal Cuinn "northern" Ui Niaill kinsman, and the son of *103.Aed Fionn Liath - of the White Hair raised all of the "northern" Ui Niall Clanns and marched on Southern Leinster to avenge the insult against her and to take her under the protection of the "northern" Ui Niall, but 104.Gormley objected to the use of any violence, and instead went for separation and restoration of her dowry. 107.Carroll mac Muirecain released her from her vows as his wife and she returned to her father, *104.Flann Sinna and *104.Niall Glun Dubh who was now the Prince / Tanaiste / heir apparent to the overall Kingship of Ireland asked her father, *104.Flann Sinna for her hand in marriage, but they both refused as 107.Carroll mac Muirecain her previous husband was still alive. During the reign of *101.Flann Sinna, Colman was to be the Abbot of Clonmacnoise monastery in Co. Offaly in the north - west of Southern Leinster and between them they were to construct the Great Church / Daimhliag Mor there.

      Flaherty / Flaithbertach mac Inmainen became the Heremonian Ui Conaire Muscraige 32nd King of Cashel / Munster who had been the adviser to 102.Cormac mac Cuilennain the recently deceased 31st King of Cashel / Munster on the Rock of Cashel, and this was a clear sign of the loss of any outstanding leaders left among the  Gaelic Milesian Heberian Eoghanachta Septs, and of what lay ahead for the future Eoghanachta dynasties as he had been selected for the same reasons that 102.Cormac mac Cuilennain had been, for his piety, and he was to be the first and last from the Munster Heremonian Muscraige Sept to be a King of Cashel / Munster.   

      Another Round Tower was now constructed by the monks at the great learning centre at Clonmacnoise monastery in Co. Offaly in the north - west of Southern Leinster, which could be utilised to escape from the fury of the Vikings and lock away any of their valuables.   

909 AD 107.Carroll / Cerball mac Muirecain the Heremonian Cu Corb Ui Dunlainge Ui Faelain 34th King of Leinster, was killed in battle against the Viking Danes of Dublin led by Ulbh, and 107.Carroll's tormented wife, 105.Gormlaith, the daughter of *104.Flann Sinna the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 169th King of Ireland then married *103.Niall Glun Dubh - of the Black Knee from the Heremonian Dal Cuinn "northern" Ui Niall who was the Cenel nEogain 29th / 30th King of Ailech in the Ulster Province and the Tanaiste / heir - apparent after the demise of her father to the overall Kingship of Ireland. *103.Niall Glun Dubh - of the Black Knee would become the direct male line ancestor of all of the O Nialls / O Neills of Ulster).

     108.Augaire became the Heremonian Cu Corb Ui Dunlainge Ui Muireadhaigh 35th King of Leinster, who was a son of 107.Ailill the previous 31st King of Leinster, descended from 103.Murray / Muireadach the 18th King of Leinster the direct male line ancestor of the Ui Muireadhaigh Sept in Southern Leinster. 

     The Gaelic Milesian Irian Clann na Rory Ui Loigis Septs who had their kingdom in Co. Laois / Leix in the mid - north - west of Southern Leinster, who were not from the Heremonian Ui Laoghaire Cu Corb Septs still always took their part, and held out against the Heberians in Mogha's Half, and were the Cu Corb Sept's most favoured vassals, which was a similar arrangement that the Gailenga Sept had with the Heberian Cianachta Sept descended from 85.Cian, (Cianachta), a brother to 85.Eoghan Mor (Eoghanachta) and 85.Cormac Cass (Dal gCais) were to be to the Ui Niaill Septs also. The  Gaelic Milesian Irian i Loigis Sept were to have 7 Septs under their leadership, with one of these being the Heremonian Cu Corb Ui Enechglais Sept near Arklow, and another the Cu Corb Ui Dunlainge Siol mBrain Sept in the south - west of Co. Wexford in the south - east of Southern Leinster and there was also another Fortuath vassal Sept, the Benntraige at Bantry in the Munster Province.        

910 AD The continual Viking interference in Ireland was to bring about great upheavals in the Celtic order, and during the 10^th Century AD the constantly harassed Heremonian Ui Laoghaire Ui Connla Kings of Ossory in Co. Kilkenny in the south - west of Southern Leinster were to continue to try and gain control over the Kingship of Leinster also, as they were always trapped between a rock and a hard place being on the border of Southern Leinster and the Munster Province. 110.Donough / Donnchad mac Gilla Patraic, the direct male ancestor of the Fitz Patricks, who was to become one of the Heberian Ui Connla Kings of Ossory later on would finally be able to succeed in this endeavour, and displace the Heremonian Cu Corb Ui Dunlainge Sept to be actually recognized personally as the first and the last of their aristocratic warriors to be King of Leinster.

      The Heremonian Dal Cuinn Ui Briuin Breifne Sept, to be represented by the O Rourkes / Ui Ruairc and the O Reillys / Ui Raghailligh, and their kinsmen the Ui Briuin Seola Sept who would be represented by the O Flahertys / Ui Flaithbheartaigh, were to also be formidable contestants for the Ui Briuin Kingship of Connacht from now on until the 11th Century AD, but despite this, their kinsmen the O Connors from the Ui Briuin Ai Siol Muireadhaigh Ui Conchobhair Sept were to be the ones who would nevertheless continue to uphold the majority of this particular position until the Anglo - Norman English Invasion.    

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