991 - 1000 AD 

993 AD *105.Brian Boru (Ui mBriain) as the Heberian Dal gCais 41st King of Cashel / Munster now used the Viking ships that he had under his control, that were situated on the River Shannon, to dominate the territories of the Heremonian Dal Cuinn Ui Briuin O Connor Kings in the east of the Connacht Province, and also the Heremonian Ui Briuin Breifne O Rourkes the Kings of West Breifne, and their kinsmen the Ui Briuin Breifne O Reillys there who were the Kings of East Breifne as the O Rourkes had their kingdom in Northern Connacht, and the O Reillys in what is now the adjoining territory of Co. Cavan in Southern Ulster. From the River Shannon he could also access the western part of the territory of *107. Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 174th King of Ireland in Meath / Midhe in Northern Leinster from the eastern bank. Although *105.Brian Boru and *107.Malachy 11 were now often in dispute, it was always settled by negotiation.

       Conall O Gara from the Heberian Cianachta Sept died this year.

      From this year on the town of Swords in Co. Dublin in the north - east of Southern Leinster was to be burned and devastated 10 times up until 1166 AD.

995 / 6 AD 109.Gilla Patrick mac Donough 1st / Padraig mac Donnchad the Heremonian Ui Laoghaire Ui Connla King of Ossory / Co. Kilkenny who had his territory in the south - west of Southern Leinster, was slain this year, who was a son of 108.Donough / Donnchad the previous King of Ossory  as he was killed by Donndubhan, a son of Imhar, and Donnell / Domhnall, a son of Faelan, who was the Heremonian Ui Cobhthaigh Ui Felim Deisi King in nearby Co. Waterford in the south - east of the Munster Province. Kelly / Ceallach became the new Heremonian Ui  Connla King of Ossory until 1003 AD, who was a son of Diarmait and from now on the Kings of Ossory and their kinsmen become known as mac Giolla Phadraig (Descended from a Son of a Devotee of Patrick) Later it would be Normanized to Fitz Patrick.

995 AD *105.Brian Boru the Heberian Dal gCais King of Northern Munster / Thomond and  the 41st King of Cashel / Munster had previously received support from *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 174th King of Ireland to fight against the continuing Viking threat, but he was now determined to realise his own overall authority to organize Ireland as a whole under his leadership and *107.Malachy 11 now feeling further threatened by *105.Brian Boru in his ever improving position as the 41st King of Cashel / Munster, made the fatal decision in deciding to uproot one of the two sacred Oak trees (bile) at Magh Adhair (The Crowning Place of the Dal gCais / Dalcassian Kings of Thomond and cut it into pieces. While this disrespectful attack was taking place *105.Brian Boru was away re - asserting his own authority to the east over the Heremonian Ui Laoghaire Ui Connla kingdom of Ossory / Co. Kilkenny in the south - west of Southern Leinster in Mogha's Half. Because of *107.Malachy’s sacrilege of Magh Adhair, *105.Brian Boru now laid siege to *107.Malachy's own personal Heremonian Dal Cuinn "southern" Ui Niaill territory in Co. Westmeath in the south - west of Northern Leinster, which was in reality an attack on the High Kingship itself and *107.Malachy 11 would be eventually forced to share Ireland with *105.Brian Boru, into Conn's Half / Leth Cuinn and Mogha's Half / Leth Mogha. From now on there would then be peace among the Gaelic Milesian aristocratic Heremonian Dal Cuinn and the Heberian Tuaths (Family regions).

      The Vikings from out of their settlement in Dublin in Co. Dublin in the north - east of Southern Leinster continued their raids to the north into *107.Malachy 11's territory in the Heremonian Dal Cuinn "southern" Ui Niaill kingdom of Meath / Midhe in the south of Northern Leinster, and this forced him once again to retake Dublin for the third time and on this occasion he also gained further authority over the Vikings there by securing their Ring of Thor and their Sword of Carlus, which were their symbols of Viking Norse supremacy there. The Vikings who were now actually in the settlement in Dublin / Dubh Linn (Dark Pool) had also previously been weakened by some of the actions of  the other Heremonian Dal Cuinn Ui Niaill Septs.

996 AD The Heremonian Dal Cuinn Colla Da Crioch Airthir Ui Echdach Sept  who were from the Clann Sinaig now held the Abbacy of Armagh.

997 AD *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 174th High King of Ireland had a meeting with *105.Brian Boru the Heberian Dal gCais 41st King of Cashel / Munster near Clonfert in Co. Galway in the south - west of the Connacht Province where they made an official arrangement were by Malachy 11 agreed to control the north (Conn's Half) and 105.Brian Boru the south (Mogha's Half) and to this end *107.Malachy 11 handed over to *105.Brian Boru the hostages he held from the Viking Norse kingdom of Dublin and Southern Leinster, which were in Mogha's Half. This arrangement was to prove to be only temporary as *105.Brian Boru had further ambitions to combine all of the Irish Septs under his personal command, to try and end the threat of the Viking menace altogether, although this would further compromise the authority of *107.Malachy 11,  even though they had marched together previously against the Viking Norse in Dublin he wanted it to end.

998 AD *107.Malachy 11 the Heremonian Dal Cuinn southern Ui Niaill 174th King of Ireland now had opposition to his overall rule in Ireland as he now only ruled the northern part of Ireland (Leth Cuinn / Conn's Half), while *105.Brian Boru the Heberian Dal gCais 41st King of Cashel / Munster ruled the southern part (Leth Mogha / Mogha's Half / Southern Ireland, which also took in Dublin and the Norse Town there in Southern Leinster. In return *105.Brian Boru handed over the hostages  to *107.Malachy 11 that he had previously taken from the Heremonian Dal Cuinn Septs in the Connacht Province, which was part of Conn's Half.

999 AD *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill  Clann Cholmain 40th King of Meath / Midhe and 174th King of Ireland, now - with opposition had his own Clann Cholmain Sept's territory in the south - west of Northern Leinster in Co. Westmeath, and was now in reality only the King of Conn's Half / Leth Conn / Northern Ireland. The Clann Cholmain Sept was initially descended from 94.Colman Mor the great - grandson of 91.Conall Cremthainne, one of the 8 sons of *90.Niall of the Nine Hostages the previous Gaelic Milesian 126th King of Tara / Ireland) (Ui Niaill.) *107.Malachy 11 was now more then ever desperate to ensure that he had complete overall control in Conn's Half, and to this end he decided to destroy the Lia Ailbe Stone, which was the chief monument  of his main opposition in Meath / Midhe, his kinsmen, the Silo nAedo Slaine Sept, who had their territory in Brega in the south - east of Northern Leinster. They were his Heremonian Dal Cuinn "southern" Ui Niaill kinsmen, descended from his ancestor, 94.Colman Mor's younger half - brother, *94.Aed Slaine a previous Gaelic Milesian Heremoniaqn King of Ireland, as both Dal Cuinn "southern" Ui Niaill Septs had previously shared the Kingships as they were both descended from 91.Conall Cremthainne.

      By now all of the Gaelic Milesian Septs had submitted to *105.Brian Boru, the Heberian Dal gCais King of Mogha's Half / Southern Ireland, except for the two Heremonian Dal Cuinn "northern" Ui Niaill Septs, the Cenel nEogain (91.Eogan) and the Cenel Conaill (91.Conall Gulban who had been another 2 of the 8 sons of *90.Niall - of the Nine Hostages the previous Gaelic Milesian 126th King of Ireland) and also among those who had also submitted were the Vikings under Sitric Silkbeard in Dublin, and his uncle, 110.Mael Morda the Heremonian Ui Laoghaire Ui Lughaidh Cu Corb Ui Dunlainge Ui Faelain 45th King of Leinster. Despite his submission, 110.Mael Morda still continued to carry out attacks against the other Septs in his own territory in Southern Leinster, and to bring him to further submission *105.Brian Boru had to also defeat his forces at Glen Manna in the west of Dublin. As *105.Brian Boru was now 59 years of age he began handing over control to 2 of his older sons, 106.Murrough / Murchad and his half - brother, 106.Teague / Tadhg.

      110.Gormley / Gormlaith the Heremonian Ui Laoghaire Ui Lughaidh Cu Corb Ui Dunlainge Ui Faelan Princess, known to the Vikings as Kormloda, who was a sister to 110.Mael Morda the Heremonian Cu Corb 45th King of Leinster had at first been married to Aulaf / Olaf Cuaran the previously deceased Danish Viking King in Dublin, to whom she had produced Sitric Silkbeard who was now the half - Viking King of Dublin. After the death of Olaf Cuaran, *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn 174th King of Ireland had also married her to try and unite the Heremonian Septs in the whole of the Leinster Province and to also gain further control in Southern Leinster. She had an intolerable attitude and he had since cast her aside as she was always a real troublemaker, this was despite the fact that he hadinitially put her half - Viking son, Sitric Silkbeard in as the Viking King of Dublin. *105.Brian Boru now married her for the very same reasons, to try and unite the Septs in Mogha's Half and end her interference in the affairs of Southern Leinster, as she had been the real cause as to why her son Sitric Silkbeard and her brother,110.Mael Morda the Heremonian Ui Dunlainge 45th King of Leinster had rebelled against 105.Brian Boru in the first place. This union should have united all the factions in Mogha's Half, as she was also the daughter of 109.Murrough / Murchad the previous Heremonian Cu Corb Ui Dunlainge Ui Faelain 41st King of Leinster. 110.Mael Morda’s personal territory was previously held by the Laigin / Lin Celts after whom the Leinster (Linster) Province was named, who had their fortress at Ferns in Co. Wexford in the south - east of Southern Leinster. 110.Gormflaith gave birth to a son by 105.Brian Boru who he named, *106.Donough / Donnchad who would become the Heberian Dal gCais 42nd King of Cashel / Munster, and a daughter 106.Sadb who was to marry 110.Cian, the son of 109.Molloy / Mael Muadh who had been the previous 40th King of Cashel / Munster, and they produced 111.Mahon who was to become the direct male line ancestor of the O Mahonys in Southern Munster. In an act of further goodwill towards her, *105.Brian also restored Sitric Silkbeard, her half - Viking son, back in control of Dublin, and her brother, 110.Mael Morda to the Kingship of Leinster hoping this would settle her down.

      *105.Brian Boru then had another revolt occur in Southern Leinster, which was backed up by the Vikings in Dublin under Sitric Silkbeard who had strongly objected to submitting to 105.Brian, who marched on Southern Leinster and defeated them at Glenn Mamain in Co. Dublin, and then marched into Dublin itself where he stayed for a month to ensure that he would retained his overall authority in all of Mogha's Half. 110.Mael Morda the Ui Dunlainge 45th King of Leinster along with his nephew, Sitric Silkbeard the half - Viking King of Dublin had to finally accept *105.Brian Boru as their over - king, and to this end they now gave over hostages to ensure their future good behaviour. Feeling more secure now to challenge *107.Malachy 11 for the overall Kingship of Ireland, to bring about total unity in Ireland under his leadership, and an end to the constant Viking disruptions, he called on those he now saw as his allies to support his push for the High Kingship of Ireland. Among his allies now were the Vikings in Dublin, the whole of Southern Leinster, and some of the other Viking warriors and their Chieftains, and together with his aristocratic warriors in the Munster Province, Ossory and Southern Connacht he now laid siege to *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn 174th King of Ireland - in opposition, at the fortress of the "southern" Ui Niaill in the Midlands / Midhe / Meath in Northern Leinster, but after a section of his followers were defeated in a skirmish, *105.Brian Boru decided it would be better to withdraw on this occassion.

      *107.Malachy 11 the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 40th King of Meath and 174th King of Ireland - in opposition who was now only in control of Conn's Half / Leth Cuinn then called on his Heremonian Dal Cuinn "northern" U Niaill kinsmen, the Cenel nEogain and the Cenel Conaill to give him their support against *105.Brian Boru, but it was not forthcoming as 106.Aedh O Niall of Craeb Tulcha who was now the Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain 39th King of Aileach stated categorically that he, " Was not willing to go into battle against the Heberian Dal gCais over sovereignty" so 107.Malachy 11 decided it was then prudent to concede to *105.Brian Boru without doing battle and causing further bloodshed to the Irish Septs.

      Between the 8th - 10th Century AD there were still to be 4 Cashel / Munster Kings inaugurated on the Rock of Cashel in Co. Tipperary in the north - east of the Munster Province.

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