Source: A History of Central and Western Texas, The Lewis Publishing Company, Chicago and New York, 1911, Volume 1, Page 358.

Judge John I. Guion is one of the distinguished jurists practicing at the bar of Runnels county and one of the most honored of the pioneers and builders of Ballinger. Born at Jackson, Mississippi, January 4, 1854, he descends from Revolutionary ancestry, and he is a son of John I. Guion Sr., an intimate friend and law partner of S. S. Prentice, both of whom played an important part in the history of Mississippi during the stormy days of that state.
Judge Guion received his literary training at Cumberland University, in Lebanon, Tennessee, with its class of 1868-1870, and he studied law under General F. J. Wharton, then attorney general of Mississippi. He was admitted to practice before the state supreme court in 1873. In 1875 he came to Texas, locating first at San Saba, the county seat of San Saba county, and in 1879 he located at Paint Rock, the seat of goverment of Concho county, but which at that time consisted of only two or three houses, and outside of that small collection there was not another house in Concho county. He opened the first law office in Paint Rock and in Concho county, and he resided there until 1886, the year of the completion of the Santa Fe Railroad to Ballinger and the beginning of this city, established by the railroad townsite department, the lots being sold soon after the completion of the road to this point.
While yet in San Saba county, Judge Guion was elected and served for two years as the county judge, which gave him a distaste for office, having held none before or since. He is, however, a true and loyal Democrat, always working for the success of Democratic principles and always found on the side of the people. He is also a patriot in behalf of Ballinger and Runnels county's development and future welfare, as a public-spirited and progressive citizen never failing to do his share. he was attorney for the First National Bank for more than twenty years. His office is on the second floor of the old First National Bank building.
Judge Guion married, on the 4th of June, 1877, Miss Armour Fentress, from San Saba county, and five daughters and three sons have blessed their marriage union. The family worship in the Presbyterian church, and the judge is both an Odd Fellow and a Knight of Pythias. The Guion home is on Eighth street, Ballinger