Alonzo J. Edgerton(June 7, 1827 to August 9, 1896) was an
American politican. He was appointed
US Senator from
Minnesota as a
Republican from
March 12,
1881 to
October 30,
1881. He was later appointed chief justice of the Territorial Supreme Court of Dakota. When
South Dakota was admitted as a State into the Union, he was made United States judge of that district. He also served as president of the constitutional convention of
South Dakota.He died in
Sioux Falls,
South Dakota.