BattlefieldsBattle of Llandeilo Fawr
Medieval

Battle of Llandeilo Fawr

1282
Wales
Era
Medieval
Battle Type
Pitched Battle
Location
Wales
Status
Unregistered
The Combatants

Who Fought

Defeated
English
VS
Victor
South Welsh
Forces involved

English: Around 1,600 infantry; 100 cavalry

Outcome
Welsh victory.
The Battle

History & Significance

The Battle of Llandeilo Fawr took place during the conquest of Wales by Edward I, at Llandeilo between an English army led by Gilbert de Clare, 6th Earl of Hertford, and a South Welsh army led by Rhys ap Maredudd.

During the Conquest of Wales in 1282, Edward I had a plan to move his armies into Wales on three fronts in order to surround the armies of Llywelyn ap Gruffudd and destroy them. Edward sent Gilbert de Clare and his army to subdue and hold down the southern areas of Wales while other armies would invade elsewhere.

Llandeilo Fawr, located near the River Towy, was a vital strategic point. Controlling the area meant access to important trade routes and a stronghold in the heart of Deheubarth, where Rhys ap Maredudd was a member of the royal family.

Gilbert de Clare with an army of around 1600 infantry and 100 cavalrymen had captured Carreg Cennen Castle from the Welsh. Following their victory, the men sacked the castle, and on the 17th of June they headed back to the nearby English settlement, Dinefwr Castle, to stash the spoils. However, along the way Clare and his men were ambushed by Welsh troops and much of the army was destroyed. This battle showcases the definitive use of guerilla warfare by the Welsh armies during the war for Welsh independence.

The battle is considered to be a great victory for the Welsh, despite the English technically winning the battle. English expansion into South Wales was halted for a few weeks and Edward's plans of an attack on multiple fronts were somewhat spoiled. Among the dead was the son of William de Valence, 1st Earl of Pembroke. Following the defeat, Edward relieved Clare of his command and replaced him with Valence, who was now determined, following the death of his son.

Stephenson, David (1983). The Last Prince of Wales: Llywelyn and King Edward: the End of the Welsh Dream, 1282-3. Barracuda Books. p. 40. ISBN 0-86023-173-9.

The ground

The ground they fought on

The site of Battle of Llandeilo Fawr lies on Llanvirn Rocks (Undifferentiated), bedrock that formed in the Whiterock. The rock here is mudstone, siltstone and sandstone.

Casualties & Losses
  • English: Heavy casualties: Almost complete destruction of the army
Questions & Answers

Frequently Asked Questions

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Overview
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Monuments
The legally protected scheduled monuments around the location, each with its period, type and significance.
Battlefields
The battles and sieges fought on this ground, mapped and set on a timeline of the wider conflict.
Roman Britain
The Roman roads, forts and towns near here, and the Iron Age people who held the land before Rome arrived.
Civil War
The Civil War fighting, garrisons and recorded militaria in this area, woven into the arc of 1642 to 1651.
Geology
The bedrock beneath the site, its age and rock type, reaching back hundreds of millions of years.
Local Names
What the street and field names around here actually mean, and the history buried inside them.
Historical Maps
Ordnance Survey maps from the 1800s, layered over the location as it stands today.
Literature
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Legal
The protected sites nearby and the metal-detecting, access and treasure laws that apply to this ground.
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Protected heritage nearby

Scheduled Monuments near Battle of Llandeilo Fawr

Dinefwr Park Roman Forts
Dinefwr Park Roman Forts
Scheduled monument · Roman · ~0.3 mi

Dinefwr Park Roman Forts is a Roman military installation situated in Wales on bedrock composed of Llanvirn mudstones, siltstones and sandstones. The underlying geology reflects the ancient seabed of the Whiterock period, now exposed and weathered to form the foundation upon which the forts were…

Adrian Dust / CC BY-SA 2.0 / Wikimedia Commons
Ffairfach standing stone
Ffairfach standing stone
Scheduled monument · Prehistoric · ~0.6 mi

Ffairfach standing stone is a prehistoric monument located in Wales and protected by Cadw under reference CM325. The stone rises from bedrock formed in the Whiterock period, where Llanvirn rocks—composed of mudstone, siltstone and sandstone—underlie the site. This geological foundation of fine-gr…

Nigel Davies / CC BY-SA 2.0 / Wikimedia Commons
Castell Dinefwr
Castell Dinefwr
Scheduled monument · Medieval · ~1 mi

Castell Dinefwr is a medieval castle occupying a prominent hilltop position near Llandeilo in Carmarthenshire, Wales. The site was a seat of the princes of Deheubarth from at least the twelfth century, with the surviving stone structures primarily dating from the thirteenth century when it served…

Gordon Hatton / CC BY-SA 2.0 / Wikimedia Commons
Two Burnt Mounds 600m ESE of Rhyd-y-Ffynnon Farm
Two Burnt Mounds 600m ESE of Rhyd-y-Ffynnon Farm
Scheduled monument · Prehistoric · ~2.6 mi

Two Burnt Mounds, located 600 metres east-south-east of Rhyd-y-Ffynnon Farm, is a prehistoric burnt mound of Bronze Age date. The monument comprises two distinct mounds composed of burnt stone and charcoal, evidence of ancient thermal technology used to heat water for bathing, cooking or metalwor…

Alan Hughes / CC BY-SA 2.0 / Wikimedia Commons
Bryngwyn Standing Stone
Bryngwyn Standing Stone
Scheduled monument · Prehistoric · ~2.7 mi

Bryngwyn Standing Stone is a prehistoric standing stone located in Wales and protected by Cadw under reference CM155. The monument stands upon Wenlock Rocks of Undifferentiated age, a bedrock composed of mudstone, siltstone and sandstone formed during the Wenlock period of the Silurian era. This…

Alan Richards / CC BY-SA 2.0 / Wikimedia Commons
Castell Carreg Cennen
Castell Carreg Cennen
Scheduled monument · Medieval · ~3.3 mi

Castell Carreg Cennen is a medieval castle occupying a dramatic limestone crag in the Black Mountain range of Carmarthenshire, South Wales. The fortress dates principally to the thirteenth century, with the substantial stone keep and curtain walls representing a significant investment in defensiv…

Nigel Davies / CC BY-SA 2.0 / Wikimedia Commons
Burnt Mound 450m ENE of Caeglas Farm
Scheduled monument · Prehistoric · ~1.1 miles
Burnt Mound 250m S of Cwm
Scheduled monument · Prehistoric · ~2.5 miles
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Sources