King John puts an embargo on wheat exported to Flanders, in an attempt to force an allegiance between the states. He also puts a levy of a fifteenth on the value of cargo exported to France and disallows the export of wool to France without a special license. The levies are enforced in each port by at least six men – including one churchman and one knight.
King John affirms that judgments made by the court of Westminster are as valid as those made "before the king himself or his chief justice".[3]
30 April – King John fails to attend the court of Philip II to answer complaints of the barons of Poitou. Philip confiscates English lands in France, granting many of them to Arthur of Brittany.[1]
Easter Monday – Black Monday: a group of 500 settlers recently arrived in Dublin from Bristol are massacred without warning by warriors of the Gaelic O'Byrne clan.[7]
August – Scotland buys peace with England after a threatened invasion.[8]
October – Llywelyn the Great and other Welsh princes pay homage to King John at Woodstock