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The Treaty of Montgomery recognises Llywelyn ap Gruffudd as Prince of Wales, but only as a vassal of King Henry III.
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Treaty of Montgomery
1267 treaty between the kingdoms of England and Wales
The Treaty of Montgomery was an Anglo-Welsh treaty signed on 29 September 1267 in Montgomeryshire by which Llywelyn ap Gruffudd was acknowledged as Prince of Wales by King Henry III of England. It was the only time an English ruler recognised the right of a ruler of Gwynedd over…Source: Wikipedia (CC BY-SA)
Llywelyn ap Gruffudd
Prince of Wales 1258–1282
Llywelyn ap Gruffudd, also known as Llywelyn II and Llywelyn the Last, was Prince of Gwynedd, and later was recognised as the Prince of Wales from 1258 until his death at Cilmeri in 1282. Llywelyn was the son of Gruffudd ap Llywelyn ap Iorwerth and grandson of Llywelyn ab…Source: Wikipedia (CC BY-SA)
Henry III of England
King of England from 1216 to 1272
Henry III, also known as Henry of Winchester, was King of England, Lord of Ireland and Duke of Aquitaine from 1216 until his death in 1272. The son of John, King of England, and Isabella of Angoulême, Henry acceded to the throne when he was only nine in the middle of the First…Source: Wikipedia (CC BY-SA)
September 29
Day of the year
September 29 is the 272nd day of the year in the Gregorian calendar; 93 days remain until the end of the year.Source: Wikipedia (CC BY-SA)