English: Around 1,600 infantry; 100 cavalry
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 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.
This page covers Battle of Llandeilo Fawr. A full Aubrey report for the area pulls together this battle alongside scheduled monuments and everything else the record holds within a few miles:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Aubrey generates in-depth historical research for any location in the UK — drawing on Domesday records, scheduled monuments, Victorian OS maps, geological data and archaeological archives to tell the full story of a place.