Martyrs of Roermond
The Martyrs of Roermond (Dutch: Martelaren van Roermond) were a group of 13 Dutch Catholic clerics, secular and religious, who were murdered on 23 July 1572 in the town of Roermond by militant Dutch Calvinists during the 16th-century religious wars—specifically, the Dutch Revolt against Spanish rule, which developed into the Eighty Years' War. == Events == On April 1, 1572 a group of Dutch rebels led by William van der Marck, Lord of Lumey, and by two of his captains, Willem Bloys van Treslong and Lenaert Jansz de Graeff managed to take the harbor city of Brielle - a turning point in the Dutch war against the Spanish Empire.