John Brooks Henderson was a United States Senator from Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

 and a co-author of the Thirteenth Amendment to the United States Constitution

Thirteenth Amendment to the United States Constitution

The Thirteenth Amendment to the United States Constitution officially abolished and continues to prohibit slavery and involuntary servitude, except as punishment for a crime. It was passed by the Senate on April 8, 1864, passed by the House on January 31, 1865, and adopted on December 6, 1865. On...

.

Born near Danville, Virginia

Danville, Virginia

Danville is an independent city in Virginia, United States, bounded by Pittsylvania County, Virginia and Caswell County, North Carolina. It was the last capital of the Confederate States of America. The Bureau of Economic Analysis combines the city of Danville with Pittsylvania county for...

, he moved with his parents to Lincoln County, Missouri

Lincoln County, Missouri

As of the census of 2000, there were 38,944 people, 13,851 households, and 10,554 families residing in the county. The population density was 62 people per square mile . There were 15,511 housing units at an average density of 25 per square mile...

, studied on his own while a farm hand, taught school, was admitted to the bar

Admission to the bar in the United States

In the United States, admission to the bar is the granting of permission by a particular court system to a lawyer to practice law in that system. Each U.S. state and similar jurisdiction has its own court system and sets its own rules for bar admission , which can lead to different admission...

 in 1844, and practiced.
He was a member of the Missouri House of Representatives

Missouri House of Representatives

The Missouri House of Representatives is the lower chamber of the Missouri General Assembly. It has 163 members, representing districts with an average size of 31,000 residents. House members are elected for two-year terms during general elections held in even-numbered years.In 1992 Missouri...

 in 1848-1850 and 1856–1858, and was active in Democratic

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

 politics. He was commissioned a brigadier general

Brigadier general (United States)

A brigadier general in the United States Army, Air Force, and Marine Corps, is a one-star general officer, with the pay grade of O-7. Brigadier general ranks above a colonel and below major general. Brigadier general is equivalent to the rank of rear admiral in the other uniformed...

 in the State militia in 1861.

On January 17, 1862, Henderson was appointed to the U.S.