Anonymous, Guy Fawkes, or The history of the gunpowder plot (1839/1858)
“ Soon after Fawkes' return from Flanders, the Parliament was further prorogued from October to the 5th of November. These repeated prorogations alarmed the conspirators, and led them to fear that their project was suspected. Their alarms, however, having been diseovered to be groundless, Catesby purchased horses, arms, and powder, and, under the pretence of making levies for the Arehduke in Flanders, assembled friends who might be armed in the country when the first blow was struck. ”
