The Battle of Mynydd Carn took place in 1081, as part of a dynastic struggle for control of the Welsh kingdoms of Gwynedd and Deheubarth. Events Corfu taken from Byzantine Empire by Robert Guiscard, Italy Byzantine emperor Nicephorus III is overthrown by Alexius I Comnenus, ending the Middle Byzantine period and beginning the Comnenan dynasty Alexius I helps defend Albania from the Normans (the first recorded mention of Albania), but is defeated at the Battle... Casus belli is a Latin expression from the international law theory of Jus ad bellum. ... Gruffydd ap Cynan (c. ... Rhys ap Tewdwr (997-1093) was a prince of Deheubarth in southern Wales. ... Trahaearn ap Caradog (died 1081) was a Prince of Gwynedd. ... Caradog ap Gruffydd (died 1081) was a prince of Gwent in south-east Wales who made repeated attempts to gain power over all of southern Wales by seizing Deheubarth. ... Events Corfu taken from Byzantine Empire by Robert Guiscard, Italy Byzantine emperor Nicephorus III is overthrown by Alexius I Comnenus, ending the Middle Byzantine period and beginning the Comnenan dynasty Alexius I helps defend Albania from the Normans (the first recorded mention of Albania), but is defeated at the Battle... Gwynedd was one of the kingdoms or principalities of medieval Wales. ... Deheubarth was a south-western kingdom or principality of medieval Wales. ...

The battle is recorded in the near contemporary biography of one of the participants, The Life of Gruffydd ap Cynan. Gruffydd ap Cynan was a descendant of the traditional ruling house of Gwynedd, and had previously made an attempt to claim the kingdom in 1075, but had been defeated by Trahaearn ap Caradog and forced to take refuge in Ireland. Gruffydd ap Cynan (c. ... Events Revolt of the Earls. ... Trahaearn ap Caradog (died 1081) was a Prince of Gwynedd. ...

In 1081, Gruffydd launched an invasion from Waterford in Ireland, having gathered a force of Danes and Irishmen to support his claim. He landed not in Gwynedd but in south Wales, near St. David's. At the church of St. David's he met with Rhys ap Tewdwr, king of Deheubarth who had shortly before been driven from power by Caradog ap Gruffydd of Glamorgan helped by Meilir ap Rhiwallon of Powys and Gruffydd's old nemesis Trahaearn ap Caradog of Gwynedd. Gruffydd and Rhys made a pact and set forth to give battle. Events Corfu taken from Byzantine Empire by Robert Guiscard, Italy Byzantine emperor Nicephorus III is overthrown by Alexius I Comnenus, ending the Middle Byzantine period and beginning the Comnenan dynasty Alexius I helps defend Albania from the Normans (the first recorded mention of Albania), but is defeated at the Battle... Waterford (Irish: Port Lairge) is, historically, the capital of County Waterford in Ireland, though today the city is administered separately from the county, the latter having its seat in Dungarvan. ... A true colour image of Ireland, captured by a NASA satellite on January 4, 2003. ... St Davids ( Welsh: Tŷddewi) is the smallest city in the United Kingdom, with a population of under 2,000 people. ... Rhys ap Tewdwr (997-1093) was a prince of Deheubarth in southern Wales. ... Deheubarth was a south-western kingdom or principality of medieval Wales. ... Caradog ap Gruffydd (died 1081) was a prince of Gwent in south-east Wales who made repeated attempts to gain power over all of southern Wales by seizing Deheubarth. ... Glamorgan or Morgannwg is a maritime traditional county of Wales, UK, and was previously a medieval kingdom or principality. ... Mediaeval kingdoms of Wales. ...

The Battle

The battle took place about a day's march north of St. David's. In the evening Gruffydd and Rhys came up with the forces led by Trahaearn and Caradog ap Gruffydd, who are reported to have had Norman arbalisters in their army. According to his biography Gruffydd ap Cynan insisted on an immediate attack, overruling Rhys who wished to wait until the following morning. The Normans (adapted from the name Northmen or Norsemen) were a mixture of the indigenous people of France and the Viking invaders under the leadership of Hrolf Ganger, who adopted the French name Rollo and swore allegiance to the king of France (Charles the Simple). ...

The result was a complete victory for Gruffydd ap Cynan and Rhys ap Tewdwr, with Trahaearn ap Caradog, Caradog ap Gruffydd and Meilir ap Rhiwallon all being killed.

Aftermath

Gruffydd ap Cynan gained control of Gwynedd, and despite later being captured and imprisoned by the Normans for some years, escaped and reigned until 1137. Rhys ap Tewdwr regained Deheubarth and reigned until 1093. These two played a prominent part in Welsh resistance to the Normans. Events Louis VII is crowned King of France. ... // Events Donald III of Scotland comes to the throne of Scotland. ...