1882 History of Mercer and Henderson counties, H. H. Hill and company.
pg. 1275-1276

Gideon Sage, Gladstone, for whom the town of Sagetown was originally named, was bor September 2, 1797, in the State of New York. His parents, who natives of connecticut, were of Scottish descent. After a residence of some years near Caledonia Springs, Mr. Sage, when twenty-one years of age, removed to Dearborn county, Indiana. Here he remained for nearly thirty years. On July 18, 1818, He was married to Miss Mary Clark, daughter of Eli Clark. Who had emigrated from Vermont. Of this marriage have been born fourteen children. Eight of them, five boys and three girls, are still living and engaged in business in differnt states. In 1874 Mr. Sage was bereft of his wife, she dying at her residence in Sagetown, aged about seventy-two years. Although Mr. Sage began life a poor boy, he has become the possessor of much property, which he has now (1882) distributed among his children . He is now eighty-five years of age and is still hale and hearty. ( A further account of Mr. Sage may be found by turning to the general history of Sagetown, which was named for him.

pg. 891-892 (Towns)
Gladstone( formerly Sagetown), was laid out by Gideon Sage, May 16, 1856, in Secs. 15 and 16 T. 10 N., R 5 W., James R. white surveyor. The town is situated on the Chicago, Burlington & Quincy railroad. The Galva branch of the same road terminates at this point from the north. The town contains about 400 inhabitants. at this point is located the excelsior sugar refinery, a large and costly establishment, owned principally by Amos T. hall, of Chicago. It seems not to have been a sucess so far; although the works and machinery are of the most elaborate kind. Some glucose has been manuactured but now the owners of the premises are preparing the works for working sorghum cane, of which the surrounding country produces largely.
Gideon Sage, The original proprietor of this town, although far advanced in years, still resides here, hale and hearty, and bids fair to yet renew his lease of life and outstrip in the race many a younger competitor. The town has one Catholic, one Presbyterian, and one Methodist church, and is well provided with school-buildins.