a Protestant theologian of Germany, was born March 26, 1756, at Wolfshageni in Lower Hesse. He studied at Marburg, was in 1776 preacher at Rauschenberg, near Marburg, in 1800 preacher at Hersfeld, and in 1818 director of the theological seminary at Herborn. Spieker died April 18, 1825. He published, besides some catechetical and homiletical works, Ueber den Mysticismus, dessen Begriff, Ursprung und Werth (Herborn, 1825). See Doring, Die deutschen Kanzelredner, page 472 sq.; Winer, Handbuch der theol. Lit. 1:365, 430; 2:73, 103, 148. (B.P.)