Crocius, Johannes a German theologian, was born at Laasphe July 28, 1590; studied at Herborn and Marburg, and graduated in 1608. In 1612 he became court preacher of the Landgrave Moritz at Cassel, doctor of divinity in 1613, and in 1616 preacher at Konigsberg. Returning to Marburg, he became professor of Theology in the University. He was the leader of the evangelical state Church of Hesse-Cassel, and the Lutheran having overcome the Reformed Church, he fled to Cassel in 1624; but after the peace in 1653, he returned and became rector of the University. He died July 1,1659. His principal works are, Erronea dogmata novorumn Arianorum in Polonia (Bremen, 1612, 8vo); Pacis et concordiea evangelicorum sacra defensio (Marburg, 1623, 8vo); Anti-Becanus i.e. controversiarum communium, quas Mart. Becanus Catholicis, Lutheri ac Calvini nomine perperam discretis, in Manuali. movit examen, ex S. S. et
antiquitate institutum (Cassel, 1643,2 vols. 4to); Anti-Becani alfoguntinorum theologorum calumniis justa vindicatio (Marburg, 1654); Anti-Weigelius (Cassel, 1651). — Herzog, Real-Encyklopadie, 3, 187.