After Robinson died, the remnant congregation at Leiden began a period of gradual decline. In time, there were only a few members left as several had between 1629 and 1633 sporadically relocated to the Plymouth Colony. This included Robinson's son Isaac who arrived in 1631 and joined the Pilgrims at the Plymouth Colony. In 1658 Professor John Hoornbeek of the University of Leiden claimed that Bridget and her children who were still residing at Leiden eventually joined the Dutch Reformed Church.