Conrad Konrad Vorst (Vorstius), a German Protestant theologian, born in Cologne, July 19, 1569, died at Tönningen, Holstein, Sept. 29, 1622. He took his degree at Heidelberg in 1594, and subsequently lectured on theology at Geneva. In 1596 he became professsor at Steinfurt, where a divinity school had been founded by Count Arnold of Bentheim, at whose request he soon afterward went to Heidelberg to clear himself of a charge of Socinianism. Though acquitted, suspicion still clung to him. After the death of Arminius in 1609, he succeeded him as professor of theology at Leyden, but was bitterly attacked, especially for his treatise De Deo (Steinfurt, 1610), which in England was burned publicly by order of James I. The synod of Dort in 1619 finally expelled Mm from Holland as a heretic. He lived two years in concealment, but an asylum was offered by the duke of Holstein to him and the Arminians, and on a tract of land given them they built the town of Friedrichstadt. Vorstius wrote many controversial works, and some few devotional, principally in Latin, but also in German and Dutch.