851 - 860 AD 

851AD 102.Matudan the Gaelic Milesian Heremonian Dal Fiatach 28th King of Ulaid, who had his territory in the east of the Ulster Province, acknowledged *103.Malachy Mor 1st / Mael Sechnaill as the  Gaelic Milesian 167th High King of Ireland and Diarmait the Abbot of Armagh officiated at the meeting between them at Armagh in Co. Armagh in the Ulster Province.

     The first Danish Viking fleet arrived in Ireland from either Denmark or Albion / Briton and attacked the Norwegian Vikings in their original settlement on the coast in Dublin in Co. Dublin in the north - east of Southern Leinster, and there was now bloody war between these two Scandinavian groups, who the Irish Septs were to call the Dubh Gall (Black Foreigners) and Finn Gall (Fair Foreigners).

852 AD The Vikings who were set up along the coast at Annagassan in Co. Louth in the north - east of Northern Leinster devastated Armagh in Co. Armagh in the south - east of the Ulster Province.

  Both Forindan and Diarmait who had both previously been the Abbots of Armagh in Co. Armagh in the Ulster Province, died this year.

   Religious reforms were to be introduced into the Irish monasteries from now on, which were to last for a Century as Mael Ruan from the Cele De / Clients of God founded a monastery also at Tallaght, in Co. Dublin in the north - east of Southern Leinster, to bring about further religious reform, and his disciple, Duibliter then also founded one at Finglas / Fionn Ghlas (The Clear Stream), both of which then became known as "The Two Eyes of Ireland" and religious reform then spread from there to Terryglass situated on Loch Derg on the River Shannon and Loch Cre near Roscrea in Co. Tipperary in the north - east of the Munster Province. Angus / Oengus from the Celi De (Clients of God) who were pushing the reforms forward wrote the Calendar of Saints / Felire Oengusso to promote improvements in Irish life and the Irish monasteries, but eventually over time the unrelenting religious drive of the Celi De for religious reform would disappear altogether.

853 AD The settlement of Dublin (The Dark Pool) was permanently set up by Olaf / Amhlaibh - the White / Fionn Gall the Viking Norwegian King, which the Vikings were to basically hold onto now for the next 300 years until their Teutonic Scandinavian kinsmen the Anglo - Norman English were to Invade in 1169 AD and Olaf - the White now proclaimed himself the King of Dublin and Waterford / Vaethrford / Vadrefjord, which was another of their Viking settlements situated further down along the east - coast on the River Suir in the south - east of the Munster Province. To further ensure entrench his position Olaf - the White was also able to defeat the Viking Danes / Dubh Gall in a great sea battle.

854 AD 106.Toole / Tuathal / Mael Brigte (Descended from a devotee of St. Brigid) the Heremonian Cu Corb Ui Dunlainge Ui Muireadhaigh 28th King of Leinster, died this year, who had been the son of 105.Murray / Muireadach, one of the 2 sons of 104.Bran Ardchenn the previous 21st King of Leinster and his Cu Corb Ui Muireadhaigh male line would be carried forward by his son, 107.Dowling / Dunlaing the future 30th King of Leinster.

     *103.Malachy Mor 1st / Mael Sechnaill the Gaelic MilesianHeremonian Dal Cuinn "southern" Ui Niaill Clann Cholmain 167th High King of Ireland to further fortify his position among the Irish Septs, gained hostages from his main opposition the Heberian Eoghanacht Septs in the Munster Province.

856 AD 106.Carroll / Cerball the Heremonian Ui Laoghaire Ui Connla King of Ossory also allied with Imhar who was the Chief of the Viking Norse in his region in Southern Leinster, and their combined fighting force was then composed of 6400 warriors, which they used to defeat the Heremonian Dal Cuinn "southern" Ui Niaill Cenel Fiachach Sept who had their territory nearby in the south - west of Northern Leinster, and their ally the Dano - Irish / Gall Gaedhil of Leath Cuinn at Aradh Tire. 

857 AD 106.Carroll / Cerball the Heremonian Ui Laoghaire Ui Connla King of Ossory and his ally Olaf / Amhlaibh - the White - Imhar this year took a great force into the kingdom of Meath / Midhe in the south - east of Northern Leinster, and also went up against the Heremonian Dal Cuinn "southern" Ui Niaill Septs there whowere now under the leadership of *103.Malachy Mor 1st / Mael Sechnaill the Gaelic Milesian 167th High King of Ireland 

     102.Matudan the Gaelic Milesian Heremonian UI Cobhthaigh Dal Fiatach 28th King of Ulaid, died, who was a son of 101.Murray / Muireadach the previous 27th King of Ulaid, descended from 95.Mael Cobo the previous 13th King of Ulaid and this was to see the end of his particular male line to the Kingships, that would now be carried forward by his father's brother,101.Aed through his 3 sons and 4 grandsons.  

      101.Lethlobar the Gaelic Milesian Irian 29th Dal nAraidi King also became the 29th King of Ulaid, who was a son of 100.Lynch / Loingsech, a son of 99.Tommaltach the previous 23rd King of Ulaid, descended from 95.Fiachnae Lurgan the 9th King of Ulaid, descended from *91.Coelub who had been the Gaelic Milesian Irian 123rd KIng of Ireland and one of the 2 sons of 90.Crond Ba Drui descended from *62,Rory Mor the Gaelic Milesian  86th King of Tara / Erinn.  

858 AD The Heremonian Dal Cuinn Ui Niaill Septs invaded and submitted the Munster Province with a great force under *103.Malachy Mor 1^st / Mael Sechnaill the Gaelic Milesian "southern" Ui Niaill Clann Cholmain 167th High King of Ireland, and he was to be the first to also take hostages from his Gaelic kinsmen there in Munster to be on their best behaviour intendingd to send a message to 106.Carroll / Cerball the Heremonian Ui Laoghaire Ui Connla King of Ossory, who had allied himself with the Vikings there in Mogha's Half in the  south - west of Southern Leinster, who also eventually submitted to him, which then prevented the Heremonian Cu Corb Ui Dunlainge Septs who also had their territory there in Southern Leinster from also gaining overall authority there.  

859 AD 104.Mael Gualae the Gaelic Milesian Heberian Eoghanacht Chaisil 26th King of Cashel / Munster, died, who was one of the 2 sons of 102.Donngal, a son of 101,Tnuthgal the previous 22nd King of Cashel / Munster, descended from 96.Colgu who had been the 15th King of Cashel / Munster, one of the 2 sons of 95.Failbhe Fland the previous 11th King of Cashel / Munster, descended from 89.Nad Froich one of the 7 sons of 89.Conall Corc the 1st King of Cashel / Munster.

       99.Kennelly / Cenn Faelad from the Heberian Eoghanacht Chaisil Airthir Chliach Sept became the new 27th King of Cashel / Munster, who was a son of 98.Murrogh / Murchad one of the 2 sons of 97.Mugthigern, the son of 96.Kelly / Ceallach, the son of 95.Crundmael, the son of 94.Cormac Sriabderg, one of the 2 sons of 93.Criffan / Crimthann Airthir Chliach the direct male line ancestor of the Airthir Chliach Sept. He in turn was a son of 92.Eochy / Eochaidh the previous Chaisil 4th King of Cashel / Munster, who was a son of 91.Angus mac Nad Froich a grandson of 89.Conall Corc the 1st King of Cashel / Munster. 99.Kennelly / Cenn Faelad as the new 27th King of Cashel / Munster ceded the over lordship in Mogha's Half of the territory of the Heremonian Ui Laoghaire Ui Connla kingdom of Ossory in the south - west of Southern Leinster in Mogha's Half to *103.Malachy Mor 1st with the Abbot of Armagh attending the Assembly, which saw them all acknowledge *103.Malachy 1st / Mael Sechnaill the Gaelic Milesian  Dal Cuinn "southern" Ui Niaill Clann Cholmain 167th High King of Ireland as superior.                                                                                      

860 AD The Vikings attacked the Heremonian Ui Laoghaire Ui Connla kingdom of Ossory / Co. Kilkenny in the south - west of Southern Leinster from out of their settlement at Waterford situated on the south - east coast of the Munster Province, which was now under the protection of *103.Malachy 1st the Gaelic Milesian Heremonian Dal Cuinn "southern" Ui Niaill 167th High King of Ireland.

   Celtic Irish Crosses of granite were erected at Ullard, Graiguenamanagh, Castledermot, Newtown and St. Mullins in Co. Kilkenny in the south - west of Southern Leinster.

       96.Kenneth / Cinaed mac Ailpine, died, as the Gaelic Milesian Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain King of the Scottii who had been able to capture the stronghold of the Scythian Gaelic Picts at Fortria in Perthshire in Alba / Scottish Highlands and unite all of the Celts in Albany as his grandmother had been a sister to Unuist the Pictish King there, who quite opposite to the Gaelic Celts, inaugurated their Kings from the female line, as agreed to originally with *37.Eremon when he gave them the wives of the aristocratic Gaelic and Tuatha De Danann warriors killed in the conflict with the Tuatha De Danann. His father, 95.Ailpin had claimed this Kingship right, because of his mother before his death in battle in 843 AD, and this had gone someway to enable 96.Kenneth to become the Gaelic King of the Scots and the Picts in Albany. 96.Kenneth mac Ailpine was interred on the Holy Island of Iona the main religious centre at that time of the Kindred of 94.Columba / St. Columbcille (The Dove of the Church).    

     The Viking Norse in Dublin on the coast in the north - east of Southern Leinster allied with *102.Aedh Findliath - of the White Hair the Gaelic Milesian Heremonian Dal Cuinn "northern" Ui Niaill Cenel nEogain 25th King of Ailech in the north - east of the Ulster Province, who was also the son - in - law of *103.Malachy Mor 1st / Mael Sechnall the Gaelic Milesian 167th High King of Ireland to try and gain the future Ui Niaill Kingship of Ireland after him, as during this Century many of the Vikings had become involved in the Irish dynastic struggles. *103. Malachy Mor 1st / Mael Sechnaill, died on Tuesday the 13^th November, after reigning for 16 years and had been a son of *102.Mulrooney / Mael Ruanaid, the son of *101.Donough / Donnchad the previous Gaelic Milesian 163rd King of Ireland.

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