In 1832 Jackson joined the Howard County militia and was elected by its volunteers to lead them during the Black Hawk War. Black Hawk was the leader of the Sac and Fox Indians, many of whom had been forced to leave their traditional territory in northern Illinois in 1804. Some, however, refused to leave permanently. After another treaty agreement was forced upon the Sac and Fox in 1831, Black Hawk led a band from Iowa country into northern Illinois. The military operations against the Sac and Fox tribes ended in their defeat.
Elizabeth was Jackson’s third wife. He married three of Dr. Sappington’s daughters. Jackson married Mary Jane on February 17, 1831, and she died five months later. Two years later, on September 12, 1833, Jackson married Louisa Sappington. On May 9, 1838, Louisa died in an accident, leaving Jackson a widower once again. Six months later, Jackson married Eliza. She outlived him by two years.
Jackson soon returned to civil life and moved west a short distance from Franklin across the Missouri River to Arrow Rock, where he married one of John S. Sappington’s
Sappington became famous and wealthy for his development and sale of quinine pills, which were an effective cure for malaria
Malaria is a disease caused by a parasite transmitted by mosquito bites. These parasites settle in the liver in human hosts and multiply. They are then released into the bloodstream, where they attack red blood cells, causing severe flu-like symptoms such as extreme weakness, chills, high fever, sweating, headache, intense nausea and diarrhea, muscle and stomach cramps, and sometimes death. Since mosquitos thrive in warm, moist environments, malaria was a common illness in settlements near swamps and rivers in America. In the 1700s and 1800s, malaria was a major problem in Missouri during the summer in cities along the Mississippi River, such as Ste. Genevieve and St. Louis, and along the Missouri River, such as Arrow Rock. Although malaria is now rare in the United States, it is still common in several countries in South America, Africa, and Southeast Asia.
. Jackson benefited both financially and politically from his marriage. His father-in-law had important connections to prominent members of the Democratic Party.