The Magna Carta: What It Said in 1215 and Why It Lasted

Magna Carta began as a peace treaty that failed. King John's government dated it 15 June 1215, the Pope annulled it within weeks, and England went to war. What survived was not the deal but the document — reissued, renamed and reinterpreted until a charter about baronial grievances became a symbol of liberty in general.

This article follows that path in order: the crisis that produced it, what the clauses actually said, how it outlived its failure, and what is left of it in law today.

A king who lost France and then his barons

Wikipedia's account starts with money and defeat. John had lost most of his ancestral lands in France to Philip II in 1204, taxed his barons heavily to win them back, and saw that effort end in expensive failure after his allies were beaten at Bouvines in 1214. Many barons already owed money to the Crown, and little trust existed on either side.

The UK National Archives' teaching collection shows what that money looked like on the page. Under Richard I, it notes, £100 was recognised as a reasonable "relief" — the payment an heir made to inherit a barony. In 1214 the sheriff of Shropshire's accounts record William FitzAlan paying 10,000 marks for his father's barony. The same year Geoffrey de Mandeville promised 20,000 marks for permission to marry the Countess of Gloucester, and lost his lands when he failed to pay.

In May 1215 the rebels renounced their feudal ties to John and marched on London. Once they held the city, Wikipedia says, a fresh wave of royalists defected, and John asked Archbishop Stephen Langton to organise talks.

Ten days at Runnymede, and a security clause

The two sides met at Runnymede, a water-meadow on the Thames between royal Windsor and the rebel base at Staines, on 10 June 1215. The rebels brought the "Articles of the Barons"; Langton spent ten days turning them into a charter. By 15 June a text was agreed, and on 19 June the rebels renewed their oaths and copies were formally issued. There were no signatures — the barons did not even add their seals.

Wikipedia summarises the promises as protection of church rights, protection from illegal imprisonment, access to swift justice and, above all, limits on taxation and feudal payments. Clause 2 put a number on the relief grievance. The National Archives' translation reads that the heir of an earl "shall pay £100 for the entire earl's barony", and the heir of a knight 100 shillings at most.

Worked example. Wikipedia's article on the mark notes that after 1066 an English mark was a unit of account worth 160 pence, two-thirds of a pound. So FitzAlan's 10,000 marks came to about £6,666.67 — roughly 67 times the £100 that clause 2 would later fix for an entire earl's barony.

Then came the clause that doomed it. Under what historians later called clause 61, a council of 25 barons could seize the king's castles and lands if he ignored a breach for 40 days. Wikipedia quotes the historian Wilfred Warren calling it "crude in its methods and disturbing in its implications". Wikipedia adds that the 25 were drawn almost exclusively from John's more active opponents.

Annulled in August, reissued for decades

John appealed to Pope Innocent III, his feudal lord since 1213. In a letter dated 24 August 1215 the Pope declared the charter "null, and void of all validity for ever". The US National Archives puts it simply: just 10 weeks after Runnymede the agreement was nullified and England plunged into internal war. John died on the night of 18 October 1216, leaving a nine-year-old heir, Henry III.

The charter's second life began with Henry's regency, which reissued it in 1216 without clause 61 to draw rebels back. A further version followed the 1217 peace, alongside a separate Charter of the Forest; to tell them apart, scribes called the larger one magna carta libertatum, which became Magna Carta. In 1225 a great council granted a tax of £40,000 and the barons asked in return for both charters to be reissued, this time in Henry's "spontaneous and free will". Edward I confirmed them again in 1297 for a new tax, entering them into statute law.

The pattern matters more than any one date. The National Archives' background notes, by Dr Matthew Phillips, describe kings who needed money for war in France repeatedly reaffirming the charter in exchange for taxation — a bargain that fed the growing importance of parliament.