Amid these negotiations, William Brewster found himself involved with religious unrest emerging in Scotland. In 1618, King James had promulgated the Five Articles of Perth which were seen in Scotland as an attempt to encroach on their Presbyterian tradition. Brewster published several pamphlets that were critical of this law, and they were smuggled into Scotland by April 1619. These pamphlets were traced back to Leiden, and the English authorities unsuccessfully attempted to arrest Brewster. English ambassador Dudley Carleton became aware of the situation and began pressuring the Dutch government to extradite Brewster, and the Dutch responded by arresting Thomas Brewer the financier in September. Brewster's whereabouts remain unknown between then and the colonists' departure, but the Dutch authorities did seize the typesetting materials which he had used to print his pamphlets. Meanwhile, Brewer was sent to England for questioning, where he stonewalled government officials until well into 1620. He was ultimately convicted in England for his continued religious publication activities and sentenced in 1626 to a 14-year prison term.