a Dutch Beggars leader, known for his intake of Loevestein in 1570. As his profession, oxen buyer was reported. De Ruyter was a convinced Calvinist , and emerged as such in 1566-1567, when Calvinism in 's-Hertogenbosch came into being, as in many other places in the Netherlands, above ground. In February 1567 he took Anton van Bombergen to 's-Hertogenbosch, who founded a Calvinist government there, in which De Ruyter also had an important share.
