Complex sentence: Wilhelm Raabe (September 8,1831--November 15,1910), German novelist, whose early works were published under the pseudonym of Jakob Corvinus, was born in Eschershausen (then in the Duchy of Brunswick, now in the Holzminden District).
Split into simpler sentences: Wilhelm Raabe (September 8,1831--November 15,1910) was a German novelist. He was born in Eschershausen (then in the Duchy of Brunswick, now in the Holzminden District).