William D. Orthwein

William David Orthwein (1841–1925) was a German-born American Civil War veteran and grain merchant in St. Louis, Missouri.

Early life
William David Orthwein was born on February 9, 1841 in Stuttgart, Wurtemberg, Germany. His father was Frederick Charles Orthwein and his mother, Louise Lidle. He had a brother, Charles F. Orthwein.

Career
Orthwein emigrated to the United States in 1860, arriving in Lincoln, Illinois, to work as a salesman. Two years later, in 1862, he joined his brother in St. Louis, Missouri to work for his grain commission business, Haenshen & Orthwein. Meanwhile, he served in the Union Army during the American Civil War of 1861–1865.

After the war, Orthwein resumed work for Haenshen & Orthwein. By 1870, he worked for his brother's grain shipping firm, Orthwein & Mersman (co-founded by Charles F. Orthwein and Joseph J. Mersman), up until 1879. The firm shipped grains to Europe from St. Louis, via New Orleans, Louisiana and Galveston, Texas. In 1879, it became known as Orthwein Brothers, and it was in business until 1893.

Orthwein founded the William D. Orthwein Grain Company in 1893. It was "the oldest grain firm in St. Louis." He hired his son Frederick to work with him until 1900, when he retired.

Furthermore, Orthwein served as the President of the St. Louis Victoria Flour Mills. He also served as the Vice President of the Manufacturers Railway Company, while Adolphus Busch served as its President. He served on the Boards of Directors of the Mississippi Valley Trust Company and the Kinloch Telephone Company. He also served on the Board of Directors of the St. Louis Merchants Exchange, and he was a member of the St. Louis Chamber of Commerce.

Personal life
Orthwein married Emily H. Thuemmler on June 9, 1870. They resided at the Orthwein Mansion at 15 Portland Place in St. Louis, Missouri for 27 years. Orthwein was a member of the Log Cabin Club and the Union Club, two private members' clubs in St. Louis, Missouri. He donated to the Mullanphy Emigrant Relief Fund.

Death and legacy
Orthwein died in 1925. He was worth US$2 million upon his death.