Northrup, Ansel Judd was born on June 30, 1833 in Madison County, New York, United States. Son of Rensselaer and Clarissa (Judd) Northrup.
Brother of William Perry N. Bachelor of Arts (salutatorian), Hamilton College, 1858, A.M., 1861, Doctor of Laws, 1895. Law student, Columbia, 1858-1859.
Admitted to New York bar, 1859, and in practice at Syracuse, since 1859, except while judge. United States Circuit Court commissioner, 1870-1897. United States commissioner, since 1897.
Judge Onondaga Company, 1882-1894. Commissioner to revise the statutes and code of New York, 1895-1901. Vice president. and president Loyal League during and after Civil War.
Lay commissioner to General Assembly Presbyterian Church, Saratoga, 1890, Buffalo, 1904, Atlantic City, 1910. Trustee Syracuse Savings Bank, Oakwood Cemetery. President Onondaga History Association Author: The Powers and Duties of Elders in the Presbyterian Church.
Northrup Genealogy, 1908. “The Judiciary,” in Political History of New York from Cleveland to Hughes, 1911. Editor: History of the Class of 1858, Hamilton College, 1898.
75th Anniversary, First Presbyterian Church, Syracuse, 1899. Early Records of the First Presbyterian Church, Syracuse, 1902.
Married Eliza Sophia Fitch, November 24, 1863 (died 1914).