Marshall, Roujet De Lisle was born on December 27, 1847 in Nashua, New Hampshire, United States. Son of Thomas and Emeline Marshall.
Parents settled at Delton, Sauk Company, Wisconsin, 1854. Educated Delton Academy, Baraboo (Wisconsin) Collegiate Institute, and Lawrence University. (Doctor of Laws, Lawrence, 1904, University of Wisconsin, 1905).
Admitted to bar, 1873. Judge company court, 1876-1882. Regent, University of Wisconsin, 1884-1886.
Judge Circuit Court, 1889-1895. Justice Supreme Court of the Wisconsin, August since 1895.