James Nathan Castle served as a Representative from Minnesota in the United States Congress from 1891 to 1893. A member of the Democratic Party, James Nathan Castle contributed to the legislative process during 1 term in office.

James Nathan Castle’s service in Congress occurred during a significant period in American history. As a member of the House of Representatives, James Nathan Castle participated in the democratic process and represented the interests of constituents.

James Nathan Castle (May 23, 1836 – January 2, 1903) was a U.S. representative from Minnesota; born in Shefford in Lower Canada; he attended the public schools; studied law; moved to Afton, Washington County, Minnesota, in 1862 and taught school; completed his law studies; was admitted to the bar and practiced; moved to Stillwater, Washington County in 1865 and continued the practice of law; elected county attorney in 1866 to fill the unexpired term of his deceased brother; city attorney in 1868; elected to the Minnesota Senate in 1868, 1878, and 1882; elected as a Democrat to the 52nd United States Congress (March 4, 1891 – March 3, 1893); chairman of the United States House Committee on Mileage (52nd Congress); unsuccessful candidate for reelection in 1892 to the 53rd United States Congress; engaged in the practice of law until his death in Stillwater; interment in Fairview Cemetery.