The subject of this sketch was born in Dayton, Ohio, in 1857, the fourth son of George Jackson, an Englishman, and Anne A. Gillis, of Harrisburg, Pennsylvania. Clifford obtained his education in the country schools in Pettis County and in the private schools of Sedalia, Missouri, and under private tuition. In July 1878, he commenced reading law, and in 1889 was appointed deputy circuit clerk of Pettis County. In 1880 he was admitted to the bar, and commenced the practice of law in Sedalia, Missouri, in 1882. In 1884 he was nominated as prosecuting attorney for Pettis County, by the Democratic Party, but was defeated by a majority of 130 in a vote of 8,000. In 1886 he located in Soccorro, New Mexico, and in 1887 was appointed district attorney of the Second Judicial District of New Mexico by Governor E. G. Ross, and resigned in February, 1889. In April, 1889, he moved to the Indian Territory and located at Guthrie, and on the 1st of September, 1889, was appointed general attorney for the Missouri, Kansas and Texas Railroad for the Indian Territory, and has been engaged in law practice in Muskogee since that time. Mr. Jackson is a man of gentlemanly appearance and address, highly educated, and possessed of great legal ability.