a German Roman Catholic theologian, was born of noble parentage in 1519, at Heilsberg, Prussia; was educated at the universities of Frankfort- on-the-Oder, Leipzig,Wittenberg, and Paris, and upon the completion of his studies took orders in the Church. During a visit of the bishop and cardinal of Wermeland to Rome, Knobelsdorff administered the duties of the episcopal office, and in 1563, upon the return of the bishop, was appointed dean-cathedral. He died in 1571. His writings are of but little account. See Allgem. Hist. Lex. iii. 41.