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 also resented the presence of foreigners, Flemish weavers in particular. Londoners detested John of Gaunt because he was a supporter of the religious reformer John Wycliffe, whom the London public regarded as a heretic. John of Gaunt was also engaged in a feud with the London elite and was rumoured to be planning to replace the elected mayor with a captain, appointed by the Crown. The London elite were themselves fighting out a vicious, internal battle for political power. As a result, in 1381 the ruling classes in London were unstable and divided. Rural communities, particularly in the south-east, were