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
Lord Mayor of London The ceremony is known as the "Silent Ceremony" because, aside from a short declaration by the incoming Lord Mayor, no speeches are made. At Guildhall, the outgoing Lord Mayor transfers the mayoral insignia — the seal, the purse, the sword and the mace — to the incoming Lord Mayor. The Lord Mayor to be elected in November 2017 was known in April of that year. The day after being sworn into office, the Lord Mayor leads a procession from the City of London to the Royal Courts of Justice in the City of Westminster, where the Lord Mayor swears allegiance