Complex sentence: Ole Edvart Rølvaag (Family name spelled "Rolvaag" in the United States) (April 22 1876-November 5,1931) was an American novelist and professor, well known for his writings on the Norwegian American immigrant experience.
Split into simpler sentences: Ole Edvart Rølvaag (modern Norwegian spelling Rølvåg, spelling "Rolvaag" in the United States) (April 22 1876-November 5,1931) was an American novelist and professor. He became well known for his writings on the Norwegian American immigrant experience.