Coat of arms of the City of London 13th-century seal, and on two embroidered seal-bags of 1319, that depicted St Paul holding a sword. It is sometimes said that the sword in the 1381 arms represents the dagger used by Lord Mayor of London William Walworth to kill Wat Tyler, leader of the Peasants' Revolt, on 15 June 1381. This tradition dates at least as far back as the first edition of "Holinshed's Chronicles", published in 1577, but cannot be correct, as the arms were in use some months before Tyler's death. The crest and supporters came into use in the 17th century, but were used without authority
Peasants' Revolt London, killing the Lord Chancellor and the Lord High Treasurer, whom they found inside. On 15 June, Richard left the city to meet Tyler and the rebels at Smithfield. Violence broke out, and Richard's party killed Tyler. Richard defused the tense situation long enough for London's mayor, William Walworth, to gather a militia from the city and disperse the rebel forces. Richard immediately began to re-establish order in London and rescinded his previous grants to the rebels. The revolt had also spread into East Anglia, where the University of Cambridge was attacked and many royal officials were killed. Unrest continued