Fredrick Julius Hartwig was born June 19, 1862, in Davenport, Iowa, to Fredrick and Katherine Buller Hartwig shortly after their arrival in the United States from Germany. His mother died when he was quite small. His father remarried and moved to New York, leaving him to be raised by relatives. In 1882 he came to Dillon by train, just two years after the city was founded, going at once to his uncle Jacob Hartwig's ranch at Willis, now know as Glen Working for his uncle and others he was able to accumulate a ranch of his own, building a two-room log cabin for his bride, Pauline Pfiefer, whom he married September 20, 1892, at Boise, Idaho. After a few years the log cabin was incorporated into a much larger home that still stands just north of Glen. Fredrick Julius Hartwig was very interested in the community and served on the school board for many years. Julius and Pauline Hartwig had a family of four: Ida Hartwig Hand, Louside Hartwig Kambich Hirst, Julius Fredrick Hartwig and John F. (Pete) Hartwig who died August 6, 1909 at the age of nine from diphtheria. Their place was truly an organic farm-ranch operation. They raised a large garden, kept several hives of bees, raised chickens, turkeys, geese, guinea hens, cows, sheep, and pigs as well as grain and hay. Their home was haven for family, friends, and travelers. Their entire married life was spent on the ranch with an occasional trip to Butte and Boise to visit relatives and friends. Julius died December 27, 1943, at his home and is buried in Mountain View Cemetery in Dillon. Written by Louside Shafer in the book "Beaverhead History."

This article states he was born in Iowa but a number of census records state he was born in Germany and there is a Julius, with similar date of birth, who immigrated to America with his grandparents, Claus and Dora Hartwig.

Listed as a "Montana Pioneer 1868" on their headstone.