The name is spelled MARSHALL or MARSCHALL. I think the latter is correct because it appears on his gravestone.

John Marschall, one of the oldest settlers of Benton county, is proprietor of a fine farm of two hundred and forty acres, and is well known as an energetic and progressive citizen.

Mr. Marschall was born in Belgium, November 1, 1835. His father was Nicholas Marschall, and his mother was Maggie (Tox) Marschall, and both were natives of Belgium. Our subject left his native land at the age of nineteen years and went to St. Paul, Minnesota. He came to Benton county in 1872 and purchased land from the railroad company. He is now the owner of a well improved and highly cultivated farm and has prospered in Minnesota. He held the office of postmaster in Parent Station for six years, and has been prominently identified with the growth and development of the commercial interests of that region.

Mr. Marschall was married in 1855 to Josephine Troufler, who was born in Belgium. Of this marriage nine children were born, of whom five sons and two daughters are still living. Mr. Marschall is a member of the Catholic church.

Compendium of History and Biography of Central and Northern Minnesota (1904) pp. 653

JOHN MARSHALL was born in Belgium, on the 1st of November, 1835. When about nineteen years of age, he came to America. For three years he lived in Macoupin county, Illinois, working in a saw mill. In 1862, he came to St. Paul, and lived for seven years, being on the police force for one year. Then coming to St. Cloud, he acted as policeman for a short time, afterwards, was in the ice business, and later, opened a grocery store, which he carried on until the year 1874, when he purchased the farm on which he has since lived. Mr. Marshall was married to Miss Josephine Trenfler, in 1854. They have had nine children, eight of whom are living.

History of the Upper Mississippi Valley (1881) p. 367 [St George]