The Treaty of Pipton was signed on 22 June 1265 during the

Second Barons' War The Second Barons' War (1264–1267) was a civil war in Kingdom of England, England between the forces of barons led by Simon de Montfort, 6th Earl of Leicester, Simon de Montfort against the royalist forces of Henry III of England, King Hen ...

and concluded an alliance between Simon de Montfort and the Welsh prince

Llywelyn ap Gruffudd Llywelyn ap Gruffudd ( – 11 December 1282), also known as Llywelyn II and Llywelyn the Last (), was List of rulers of Gwynedd, Prince of Gwynedd, and later was recognised as the Prince of Wales (; ) from 1258 until his death at Cilmeri in 128 ...

. The treaty, signed at Pipton,

Powys Powys ( , ) is a Principal areas of Wales, county and Preserved counties of Wales, preserved county in Wales. It borders Gwynedd, Denbighshire, and Wrexham County Borough, Wrexham to the north; the English Ceremonial counties of England, ceremo ...

, came after Simon de Montfort's defeat of English King Henry III at the

Battle of Lewes The Battle of Lewes was one of two main battles of the conflict known as the Second Barons' War. It took place at Lewes in Sussex, on 14 May 1264. It marked the high point of the career of Simon de Montfort, 6th Earl of Leicester, and made ...

in 1264. The king and his son Prince Edward were captured. Llywelyn began negotiations with de Montfort, and in 1265 offered him the sum of 30,000 marks in exchange for a permanent peace, in which Llywelyn was acknowledged as the

Prince of Wales Prince of Wales (, ; ) is a title traditionally given to the male heir apparent to the History of the English monarchy, English, and later, the British throne. The title originated with the Welsh rulers of Kingdom of Gwynedd, Gwynedd who, from ...

. The treaty established an alliance between Llywelyn and de Montfort, an alliance cemented by the widower Prince agreeing to a betrothal between himself and de Montfort's only daughter

Eleanor Eleanor () is a feminine given name, originally from an Old French adaptation of the Old Provençal name ''Aliénor''. It was the name of a number of women of royalty and nobility in western Europe during the High Middle Ages">Provençal dialect ...

but the favourable terms primarily that the fealty of all the Princes, Lords and Chieftains of Wales be recognised as belonging to Llywelyn by right of sovereignty indicated de Montfort's desperate need for a counter to the power of the English

Marcher Lords A marcher lord () was a noble appointed by the king of England to guard the border (known as the Welsh Marches) between England and Wales. A marcher lord was the English equivalent of a margrave (in the Holy Roman Empire) or a marquis (in France ...

References

Pipton Treaties of Wales Treaties of medieval England History of Powys 1265 in England {{Treaty-stub