Lewis Sergeant, John Wycliff, last of the schoolmen and first of the English reformers (1893)
“ It is probable, however, that Blackheath was simply the common rendezvous for the south-eastern counties, whilst the men of the eastern counties met at Mile End. The Essex men would naturally make direct for the eastern gate of the city, though some of them may have been drawn to Blackheath in order to meet John Ball. One of Ball's lieutenants, Jack Straw, seems to have crossed the Thames at an earlier date, with a few companions, for the purpose of rousing the southern shire and opening the gates of Maidstone jail. ”
