Longshanks and the Conquest of Wales: A Tale of Castles, Power, and Dominance

In the late 13th century, King Edward I, also known as Longshanks, launched a campaign to assert English authority over Wales.


Medieval King Edward I Illustration Portrait
King Edward I, also known as Longshanks

At the heart of this campaign were a series of magnificent castles, built by the finest engineers and architects of the time.


These castles were designed to dominate the Welsh population, assert English power, and change the course of history.


Who was Longshanks, and why did he build these castles?

conwy castle g28f3203a3 640

“Longshanks, also known as King Edward I of England, played a pivotal role in the conquest of Wales, employing both military might and political maneuvering to assert English dominance over the Welsh. His relentless pursuit of control over the region left a lasting impact on the political and cultural landscape of Wales.”

Dr. Elizabeth Thomas, Professor of Medieval History

Edward I was king of England from 1272 to 1307. A powerful and ambitious monarch, he was determined to extend English control over Wales, which had been only partially conquered by his predecessors.

He believed that building a series of castles in strategic locations would help him achieve this goal by providing a base for English forces to control the surrounding areas.


The Castles of Longshanks: A Timeline

1277 – Edward I invades Wales, defeating the Welsh prince Llywelyn ap Gruffudd. He begins the construction of Caernarfon Castle, a massive fortress that would become one of his most iconic and enduring creations.

1283 – The last Welsh rebellion is crushed, and Edward I orders the construction of Conwy Castle, a strategically located fortress on the North Wales coast. The castle is built in just four years and is a masterpiece of military engineering.

1295 – Edward I commissions the construction of Beaumaris Castle, the final and most impressive of his Welsh castles. Located on the Isle of Anglesey, it is designed to be a formidable stronghold, with concentric walls, a water-filled moat, and a series of towers and battlements.


The Builders of Longshanks’ Castles

To build these magnificent fortifications, Longshanks employed the finest engineers and architects of the day. Among them were Master James of St. George, a highly skilled military engineer who oversaw the construction of all three of Longshanks’ Welsh castles.

Other notable architects and craftsmen who worked on the castles include James of Caernarfon, Nicholas of Ewloe, and Master Richard the Mason.

Medieval Stonemason

The Impact of Longshanks’ Castles

The construction of these castles had a profound impact on Welsh society and culture. They were seen as symbols of English power and domination and were accompanied by forced resettlement of Welsh communities and the destruction of Welsh homes and farms.

Despite this, the castles also played an important role in shaping Welsh history, as they were the site of many important battles and sieges.

Caenarfon Castle in Wales
Caenarfon Castle was another castle in Wales commissioned by King Edward I during his military campaigning into Wales.

“Edward I’s conquest of Wales marked a significant turning point in the history of both nations. His military campaigns and the subsequent imposition of English law and governance reshaped Welsh society, leading to a complex and often contentious relationship between Wales and England for centuries to come.”

Dr. Robert Hughes, Historian and Author

Today, the castles built by Longshanks are some of the most iconic and well-preserved medieval fortifications in the world. They continue to attract visitors from around the globe, who come to marvel at their beauty, learn about their history, and appreciate their enduring legacy.

In conclusion, Longshanks and his castles are a testament to the power of medieval monarchs and the enduring legacy of their creations. These castles remain a vital part of Wales’ history and heritage, a reminder of the past and a symbol of the enduring power of human creativity and ingenuity.

Beaumaris Castle England
Beaumaris Castle

The Ring of Castles

The ring of castles built by King Edward I, known as “Longshanks,” was a strategic network of fortifications constructed in Wales during the late 13th century.

This ring of castles, often referred to as the “Iron Ring,” was built to establish English control over Wales and suppress Welsh uprisings.

The primary purpose of these castles was to serve as military strongholds and administrative centers, allowing the English crown to maintain authority and enforce its rule. They were strategically positioned at key points throughout Wales, strategically located to control important routes, river crossings, and coastal areas.

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Harlech Castle


The castles were designed with robust defensive features, such as high curtain walls, imposing towers, and sturdy gatehouses. They were equipped with garrisons of soldiers and provided secure bases from which English forces could launch military campaigns, quell rebellions, and exert control over the Welsh population.

aerial view criccieth castle rocky peninsula overlooking tremadog bay north wales

“The conquest of Wales by Edward I was a formidable display of military prowess and political strategy. Longshanks employed a combination of castle-building, military campaigns, and the implementation of new administrative systems to subdue the Welsh and solidify English control over the region.”

Dr. Sarah Jenkins, Research Fellow in Medieval Studies

The construction of this ring of castles aimed to intimidate the Welsh, solidify English dominance, and prevent further uprisings. It was part of Edward I’s wider strategy to conquer and pacify Wales, which culminated in the defeat of Llywelyn ap Gruffudd, the last native Prince of Wales, in 1282.

Llywelyn the Great
Llywelyn was the ruler of most of the Welsh territories in the late 12th and early 13th centuries.

While some of these castles, such as Caernarfon, Conwy, Harlech, and Beaumaris, have endured and remain prominent landmarks today, others have fallen into ruins over time. Nevertheless, collectively, they stand as a testament to Edward I’s military prowess and his efforts to assert English control over Wales.


List of Castles

Caernarfon Castle, Gwynedd

Constructed by King Edward I, Caernarfon Castle is a formidable fortress and a UNESCO World Heritage site. It was built to solidify English control over Wales and served as a seat of government for the region.

Conwy Castle, Conwy

Another iconic castle built by Edward I, Conwy Castle is a magnificent medieval fortress. With its impressive defensive walls and towers, it played a crucial role in subjugating and controlling the Welsh population.

Harlech Castle, Gwynedd

Harlech Castle stands proudly atop a rocky outcrop, overlooking the Irish Sea. Built by Edward I, this massive castle served as a symbol of English dominance and played a significant role in the conquest of Wales.

Beaumaris Castle, Anglesey

Beaumaris Castle, situated on the island of Anglesey, was part of Edward I’s plan to establish English authority in Wales. Although unfinished, it showcases innovative design features and remains an architectural marvel.

Builth Castle, Powys

Builth Castle, located in mid-Wales, was one of the fortresses built by Edward I to exert control over the region. Though now in ruins, its remains stand as a testament to the power and influence of the English crown.

Rhuddlan Castle, Denbighshire

Constructed by Edward I, Rhuddlan Castle played a crucial role in consolidating English authority in northeastern Wales. Its strategic location near the River Clwyd facilitated control over the surrounding areas.

Flint Castle, Flintshire

Flint Castle was built by Edward I as part of his plan to subdue the Welsh and ensure his dominance in the region. The castle’s imposing structure and strategic position made it a vital stronghold during the conquest of Wales.

Builth Wells Castle, Powys

Builth Wells Castle, also known as Castell Llwynrhystud, was another fortress established by Edward I. Though now in ruins, it once served as a formidable symbol of English power in the heart of Wales.

Aberystwyth Castle, Ceredigion

Originally built by Gilbert de Clare in the 13th century, Aberystwyth Castle was later extended and reinforced by Edward I. It played a role in maintaining English control over western Wales and defending against potential Welsh uprisings.

Criccieth Castle, Gwynedd

Criccieth Castle, located on the Llyn Peninsula, was originally constructed by Llywelyn the Great, but later seized and rebuilt by Edward I. Its commanding position overlooking Cardigan Bay made it a significant stronghold in the region.

These castles built by King Edward I, also known as “Longshanks,” represent a legacy of English dominance in Wales and serve as enduring reminders of the turbulent history between England and Wales.


Longshanks and the Conquest of Wales | Great Books

“The Conquest of Wales” by R.R. Davies:
This book provides a comprehensive account of the conquest of Wales by Edward I, including the construction of the ring of castles. It explores the political, military, and cultural aspects of the conquest, shedding light on the motivations and strategies behind Edward I’s actions.

“The Building of Castle Rising” by David King:
Focusing on the construction and significance of Castle Rising in Norfolk, England, this book offers a detailed examination of one of the castles built by Edward I. It delves into the architectural features, historical context, and role of the castle in English control over Wales.

“Edward I and Wales” by David Stephenson:
This book explores the relationship between Edward I and Wales, highlighting the king’s ambitions, policies, and the impact of the ring of castles on Welsh society. It examines the military, political, and cultural consequences of Edward I’s actions in Wales.

“The Castles of Edward I in Wales 1277-1307” by Arnold Taylor:
Arnold Taylor’s book provides an in-depth analysis of the castles built by Edward I, their strategic significance, and their impact on Welsh history. It examines each castle individually, offering insights into their construction, purpose, and subsequent roles in the region.

“Edward I and the Conquest of Wales” by Sean Davies:
Sean Davies explores Edward I’s conquest of Wales and the role played by the ring of castles. This book delves into the political dynamics, military campaigns, and cultural consequences of the conquest, shedding light on the complex relationship between England and Wales during this period.

These books offer valuable insights into the construction, significance, and historical context of the ring of castles built by Edward I in Wales. They provide a comprehensive understanding of the military, political, and cultural dynamics of the time, allowing readers to delve deeper into this fascinating chapter in British history.