William Grindecobbe motivated at least in part to rebel as a result of the pressures of papal taxation. Along with Wat Tyler and John Wrawe, he was one of the key leaders of the peasants during the revolt of 1381, leading the townspeople of St Alban's on 15 June. He was executed in 1381 along with John Wrawe and John Ball. His trial and execution was overseen by Henry le Despenser. During the Peasants' Revolt of 1381, he became well known for his actions against the high lord Thomas de la Mare, Abbot of St. Albans. He led a deputation to King
John Gayer (Lord Mayor of London) Abdy, Alderman and Sheriff. Another daughter Mary married Sir Andrew Henley, 1st Baronet. His nephew was Sir John Gayer, Governor of Bombay. John Gayer (Lord Mayor of London) John Gayer or Gayre (died 20 July 1649) was an English merchant who was Lord Mayor of London in 1646. He was born in Plymouth, eldest son of John Gayer senior, a merchsnt, and Margaret Trelawney. Both his parents were Cornish by birth: the Gayer family came originally from Liskeard. Gayer moved to London, and at one stage of his career spent some years in Syria, where a strange event later led