Jens Peter Jacobsen (1847-1885) was a Danish novelist, poet, and scientist, in Denmark often just written as "J. P. Jacobsen" and pronounced as "I. P. Jacobsen." He began the naturalist movement in Danish literature and was a part of the Modern Break-Through. The fine literary work of Jacobsen is small: two novels, seven short-stories, and one volume of posthumous poems, but it places him as one of the most influential Danish writers. In spite of his not very extensive work Jacobsen's international influence is rather strong. In Germany both his novels and poems were widely read and they are known to have influenced both Rilke and Thomas Mann just as it has probably made impression on Lawrence. His works include: Marie Grubbe (1876), Niels Lyhne (1880), and Mogens and Other Stories (1882).