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
Peasants' Revolt a great storm in England during May 1381, which many felt to prophesy future change and upheaval, adding further to the disturbed mood. The revolt of 1381 broke out in Essex, following the arrival of John Bampton to investigate non-payment of the poll tax on 30 May. Bampton was a member of Parliament, a Justice of the Peace and well-connected with royal circles. He based himself in Brentwood and summoned representatives from the neighbouring villages of Corringham, Fobbing and Stanford-le-Hope to explain and make good the shortfalls on 1 June. The villagers appear to have arrived well-organised, and armed with