What Was The Battle Of Clontarf? History & Time Line

Viking rule is remembered as a dark age where wars were an integral part of everyday life. Many famous battles took place in that period, and the battle of Clontarf is certainly amongst the most important ones.

This battle ended the centuries-long Viking rule in Ireland. Therefore, the Battle of Clontarf is considered the greatest battle that took place in Ireland, which changed the course of the history of the Irish people forever on April 23, 1014.



Events That Preceded The Battle of Clontarf

Modern Irish annals are considered to be the most reliable sources on the Battle of Clontarf. However, there isn't much detail about the battle itself in these records. They mostly contain the names of warriors who fought in the mentioned battle and those who died in it.

Yet almost all known sources agree on the key elements of the battle. 

Thus, in both medieval and modern sources, the battle of Clontarf is described as an extremely cruel and fierce battle, which took many human lives (over 10,000).

It all started decades before the Battle of Clontarf. 

During this time, many "smaller" battles were fought. One such fight took place near Sulcoit when the Vikings attacked the land of Brian Boru. In this battle, Boru, who would later become the High King of Ireland, won the victory over the Vikings with the help of his brother.

Soon after this event, a new conflict between the Vikings and Brian Boru occurred. It was the battle for Bealach Leachta in which the Vikings suffered yet another defeat.

Victory in this battle was crucial for Brian as after the battle was won, he was in the race for the position of High King of Ireland, which was his ultimate goal.

However, the place of the High King was not so easily achievable, and Boru had to face another difficult battle. 

It was the Battle of Cathair Cuan. 

This was when Boru killed the last descendant of Ivar's lineage - the Viking King of Limerick. Not long after, the final blow to the Viking rule over Dublin came after the Battle of Tara.

In this battle, Mael Sechnaill mac Domhnaill defeated the powerful Viking king, Olaf, and captured Dublin. For the next few decades, Dublin was more or less ruled by Mael Sechnaill, but the status of the Kingdom of Dublin was no longer the same.

In 1002, Brian Boru took over the High Kingdom, establishing himself as the new High King.

Rebellion Against Brian Boru - High King of Ireland

Brian Boru-High King of Ireland

The fact that Brian Boru took over the High Kingdom and became the ruler of all Ireland (which included several small Irish kingdoms) was not to the liking of some rulers.

As a result, there were frequent conflicts between Brian and other rulers in Ireland. 

The first significant conflict was with Sigtrygg Silkbeard, the Viking leader in Dublin. This conflict is known as the Battle of Glenmama, and Brian emerged victoriously once more.

Tensions between Irish and Viking leaders continued to rise, and conflicts became more frequent.

As a result of dissatisfaction with Brian's rule, a rebellion led by Máel Mórda mac Murchada, King of Leinster, sparkled. The army assembled by Mórda was composed of about three thousand warriors from Leinster and three thousand Vikings.

Seeing that things were slowly spiraling out of control, Brian Boru tried to establish diplomatic relations with the Viking leader in Dublin, Sigtrygg Silkenbeard, by offering him his daughter for a wife. To further strengthen the alliance, the High King even married Silkenbeard's mother, Gormlaith. 

However, in spite of everything, the alliance between the High King and the Viking leader did not last.

On the contrary, a new alliance was formed between the leaders who first rose up against Brian Boru. It was an alliance between Sigtrygg Silkenbeard and Máel Mórda mac Murchada.

Alliance Between Máel Mórda Mac Murchada (King of Leinster) and Sigtrygg Silkenbeard (King of Dublin)

When in 1013 Sigtrygg Silkenbeard attacked Brian Boru, Máel Mórda came to help him. This marked the beginning of an alliance to fight the High King.

Although Boru was married to Sigtrygg's mother, Gormfliath, she also decided to join her son in the fight against Brian. She left Boru and set out in search of Viking allies who lived outside the borders of Ireland.

In addition to the newly formed alliance, other Irish clans were against Boru. One such clan was led by the Great Sigurd of the Orkney Islands, while Brodir of the Isle of Man led the other.

With a large army at their disposal, both mentioned clans joined the alliance in the fight against Brian Boru. The reason for joining the alliance was the promise given to them by Sigtrygg's mother, Gormfliath, which was the High King's seat.

Also, many other Viking groups joined the alliance, coming even from Normandy and Iceland.

From all this information, we can clearly see that many forces sought to take control of Ireland. As a result, the political situation was highly complex and unstable, and it was clear that a large-scale battle was cooking.

And there it was.

The most significant conflict between Brian and the Nordic-Irish alliance was the battle of Clontarf. In this conflict, Sigtrygg Silkbeard (King of Dublin) and Mael Morda (King of Leinster), and their allies fought against Brian.

Both warring parties were made up of Vikings and Irish, turning the battle for Ireland into a Civil War.

The Battle of Clontarf: Timeline

The Siege of Dublin

When 917 Dublin was re-established and became the richest city in Ireland, the ambition of the kings to control it was growing.

For many reasons, the control of this city became a condition for control of the entire island of Ireland.

At the beginning of the 11th century, in 1002 to be exact, Brian Boru became the High King of Ireland. However, he aspired to control Dublin as well.

The animosity between Brian and the rulers of both Dublin and other provinces grew. 

In an attempt to conquer Dublin, Brian and his army launched an attack in the fall of 1013. The siege of the city took place at Christmas time and was unsuccessful, so Brian withdrew his army back to Munster.

However, in the spring of the following year (1014), Brian again set out on a campaign to capture Dublin. This campaign was known as the 1014 campaign.

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1014 Campaign

Campaign 1014 is the name for Brian Boru's 2nd attempt to capture Dublin. This campaign began north of the River Liffey, where Brian's troops ravaged the Fine Gall (part of the territory that the Scandinavians from Dublin ruled).

Brian's strategy was to force the opposing army to leave Dublin, which would then become easy prey. Accordingly, his military troops moved towards Howth, where they faced the Dublin Army.

The conflict between these two great armies is known as the Battle of Clontarf.

Battle of Clontarf

Map of the Irish kingdoms

According to sources, the battle took place on Good Friday, 1014.

However, despite the sources citing Good Friday as the day of the battle, many scholars believe this information was later added to the manuscripts.

It is known that Boru was a great Christian king who fought with all his might to free Ireland from the power of the pagans. Therefore, the belief emerged that Good Friday was listed as a day of the battle so that people would compare Brian Boru, the liberator of Ireland, with a deity (such as Jesus Christ).

But, let's get back to the battle.

The conflict between the two great armies took place early in the morning, on April 23, 1014. On one side of the battlefield was Boru with his allies, while on the other side were the forces of Máel Mórda mac Murchada, the Dublin Viking Army, and the Viking mercenaries (warriors from the Isle of Man, the Orkney Islands, Normandy, and Iceland).

Brian's army was approaching the battlefield from the north, while the Dublin army was coming from the south.

Brian managed to push Mórda's army far enough to cut them off from their longboats, which forced them to flee back to the walls of Dublin. As they retreated, Brian's army caught up with them, and Mórda was killed along with many of his men.

The battle lasted all day, and at least ten thousand lives were lost.

By the end of the day, Brian and his army had forced the enemy to retreat. One part of the army led by Sigtrygg Silkbeard and Brodir retreated towards the Dublin fortress, while the remaining groups tried to break through to their ships or reach Howth through the forest.

Brodir's and Sigtrygg's armies were followed by Brian's troops, catching up with them and massacring them at Dubgall Bridge. The army retreating towards the sea encountered difficulties and remained trapped between Brian's forces and the water.

Before he was killed, Brodir (while retreating) came across Brian Boru's camp. According to sources, Brodir killed Boru while praying in his tent for the victory of his army.

So, although he won the battle, the great king, who was the model of the Christian leader, lost his life.

Just like any good story, this battle depiction has elements of truth and fiction. 

Nevertheless, the battle of Clontarf was a significant event.

The fact that this event has been celebrated for centuries in Irish literary works speaks of how important it was for the development of the Irish national identity.

High King Brian Boru in The Battle

You are probably wondering why such a great leader was not killed on the battlefield but during prayer in his tent.

However, if you think about it, you'll see that it's not such a surprise. 

Brian Boru was an older man in his late seventies at the time of the battle. Therefore, no matter how great his power was, his personal participation in the battle was hardly possible.

Most likely, Brian left the command over his army to his sons and other leaders while he remained in the camp waiting for the news in prayer.

Death of High King Brian Boru

The grave of Brian Boru

Brian Boru's career as a leader and great king did not last long enough for him to enjoy victory and be celebrated as Ireland's liberator.

As mentioned above, he was killed during the battle by the Viking leader Brodir while he was kneeling in his tent, praying for victory.

When the enemies were massacred, and the death of the High King was avenged, Brian's army laid his remains in the cathedral at Armagh. The body of the great king remained there for twenty days before the burial rites.

Victims of The Battle

As we mentioned at the beginning, the Irish annals contain the names of important people who died in the battle of Clontarf.

Many lives were lost in this battle. As for the leaders of the conflicting military forces, in addition to Brian Boru, Mael Morda (King of Leinster), Sigurðr (Count of the Orkney Islands), and Dubgall mac Amlaib (Sigtrigg's brother) also lost their lives.

Although Brian's army emerged victorious from the battle, it's clear that the Irish had to pay a high price for their freedom.

The Battle of Clontarf soon had legendary status, and the death of Brian was an important event for both Ireland and world history.

Period of Peace

Once the battle of Clontarf was over, the period of peace began.

The Irish chiefs and the Norsemen finally lived in peace and harmony.

The only leader who survived the battle of Clontarf was Sigtrygg. Some sources say that he didn't even take part in the battle but remained safe behind Dublin's walls while his army was fighting.

Even though he lost the battle, Sigtrygg remained king of Dublin for the next 30 years. But, the power of his Kingdom was significantly reduced.

After Brina's death, the throne was inherited by the former High King, Máel Sechnaill mac Domnaill. However, after Brian's death, the title of High King became less valuable.

The Significance of The Battle of Clontarf in Irish History

The victory of the High King over the Norsemen was a turning point in the history of the Irish people.

After the battle and death of prominent Viking leaders, the number of Norsemen in Ireland decreased, and thus their centuries-long domination ceased.

Brian Boru was declared a national hero, and his victory was considered the greatest contribution in the fight against the conquest of Ireland by the Vikings.

Vikings Role in Brian's Coming to Power

The image of the Vikings as bloodthirsty warriors was common in the medieval era. However, today, this perspective is changing.

Recently, the Vikings are often mentioned as great entrepreneurs who have left a deep mark in the cultural history of Ireland.

We can say that both of these perspectives contain elements that are true because the Vikings were both. 

Ruthless warriors on the battlefield, and people who nurtured their culture and tried to keep their identity in everyday life.

In the late 8th century, the Vikings ravaged the coast of Ireland. Shortly afterward, they began to establish their colonies. Thus, as early as the end of the 10th century, Dublin, Limerick, and Waterford were the most important among them.

At the time of the Battle of Clontarf, marriages between Irish and Viking dynasties were common. The basic goals of these marriages were to facilitate the conclusion of alliances and cultural exchange.

Although the political power of the Norse people was limited, it's known that the Viking army was extremely successful on the battlefield. Also, Viking traders had strongly developed trade networks with countries abroad.

So the power of the Irish Vikings seemed to be growing.

Therefore, it is not surprising that the Irish kings sought to take control of the economic and military resources of the Viking ports and thus expand their political power.

Brian Boru was the most prominent among these kings, with a strong ambition to become the supreme king of Ireland. After coming to power in Munster, he continued to expand his power to neighboring territories.

Although he would later fight against the Viking leaders, at that time, Boru had the support of the Viking military troops.

Ironically, the Vikings helped Boru fight at Limerick when he killed Ivarr (977). 

In an effort to take absolute control of Ireland, Boru had the great support of the Viking allies. However, in the end, Brian's Viking allies turned against him, which led to a showdown at the Battle of Clontarf.

The End of The Viking Era

The Battle of Clontarf is considered one of the heaviest defeats the Vikings have suffered in their history. With this battle, the rule of the Vikings in Ireland came to an end.

But not only that. Sources say that after this event, the Viking influence started to decrease all over Europe. Their trade ties weakened, and with it, their power.

Just like that, the era of Viking domination was over.

A Few Words for The End

It is pretty clear why the name Brian Boru is on the list of heroes who gave their lives for the freedom of Ireland.

On Good Friday, April 23, 1014, Boru lost his life in the battle of Clontarf. Ireland was liberated from Viking rule but lost its greatest king.

The victory that the High King won in his last battle significantly changed Irish history forever. In one of the most famous Nordic sagas, the Njál's saga, Valkyries' prophecy is described saying that the Irish people will suffer a sadness that will never grow old in people's heads.

And indeed, the death of the great King Brian Boru is not forgotten even today.

May all heroes from the battle of Clontarf rest in peace.


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