Dublin has been abandoned - the end of the Longphort phase - the term used by modern scholars to refer to the earliest period of Viking settlement at Dublin
A large Viking fleet arrives in Waterford and a second period of Viking raids begins. The Vikings also established a base in Waterford.
916
25 May: death of Flann Sinna (b 847 or 848), the son of Máel Sechnaill mac Máele Ruanaid of Clann Cholmáin, a branch of the southern Uí Néill. He was King of Mide from 877 onwards, following Donnchad mac Eochocain, and is counted as a High King of Ireland
The Annals of Ulster records the arrival of two Viking fleets in Ireland in 917, one led by Ragnall and the other by Sigtrygg, both of the Uí Ímair kindred. They fought a battle against Niall Glundub in which the Irish were routed, and according to the annals Sigtrygg then "entered Áth Cliath", i.e. Dublin, which we must assume means that he took possession of it. Ragnall Uí Ímair went on to Scotland, and then conquered York and became king there.
919
Niall Glúndub, overking of the Uí Néill, killed in the battle of Dublin. He fell fighting the Dublin Norse at Islandbridge.
Death of Sigtrygg Caech (or Sihtric), a Norse-Gael King of Dublin who later reigned as king of York. His epithet means the 'Squinty'. He belonged to the Uí Ímair kindred.
928
Viking massacre of native Irish in Dunmore Caves in County Kilkenny.
Death of Donnchad Donn mac Flainn, King of Mide; he is succeeded by Oengus mac Donnchada.
950s
956
Death of Congalach Cnogba, High King of Ireland, of the Síl nÁedo Sláine, part of the Southern Uí Néill. Domnall ua Néill becomes overking of the Uí Néill and reigns until his death in 980.
A hoard of 43 silver and bronze items was left in a rocky cleft deep in Dunmore Caves near Kilkenny. It consisted of silver, ingots and conical buttons woven from fine silver and was discovered in 1999.
976
Mathgamain, leader of the Dál gCais from east Clare, is killed.
Death of Muirchertach mac Mael Sechnaill, King of Mide.
Death of Domnall ua Néill, overking of the Uí Néill, who had reigned since 956: he is succeeded by Mael Seachnaill II, who reigned until his death in 1022
Battle of Tara, at which Mael Seachnaill II defeats a Viking army from Dublin.
981
Mael Seachnaill II besieges and takes the city of Dublin from the Vikings and imposes a heavy tribute on them.
982
The King of Munster, Brian Boru starts extending his authority from his base around Limerick up the River Shannon. By doing so, he comes into conflict with High King Mael Seachnaill II whose power base is the Province of Meath. It is that start of a conflict that lasts until 997.
Brian Boru and Mael Seachnaill II divide Ireland between them
The Battle of Cathair Cuan, fought in or between 977 and 978, or simply to a single battle in one or the other year, in Munster in Ireland. Attacking were Brian Bóruma and the Dál gCais, while defending were Donnubán mac Cathail and the remainder of the royal army of Norse Limerick.
998
King Mael Mordha of Leinster, rebelled against the High King of Ireland, Brian Boru.
999
Brian Boru defeats the Leinstermen and the Vikings at the Battle of Glenn Mama. Sigtrygg Silkbeard, King of Dublin, submits to him. Brian plunders the city.
