DuVal was nominated by President
Franklin Pierce on February 26, 1857, to the
United States District Court for the District of Texas, to a new seat authorized by 11 Stat. 164. He was confirmed by the
United States Senate on March 3, 1857, and received his commission the same day. His service terminated on October 10, 1880, due to his death in
Fort Omaha,
Nebraska. However, he remained at his station in Austin, taking a job with the General Land Office to sustain himself, due to the fact that his judicial salary was unavailable due to the war and another unpaid position as a deputy county surveyor, which permitted him to avoid conscription into the
Confederate States Army. He was sufficiently respected by the local community that he did not suffer indignities under the Confederate government. DuVal ultimately was able to resume holding court at the end of the war and was paid his full back pay due him during the war years. ==See also==