Samuel Walker was born on October 19, 1822 in Franklin County, Pennsylvania. After marrying Marian E. Lowe in 1842, Walker moved to Ohio in 1848, and worked there as a cabinet maker. In 1855 he settled permanently in Lawrence, Kansas. There Walker became a founding member of the Bloomington Guards, a local militia company, in late 1855, and he was quickly elected first sergeant. In the following year Walker was elected colonel of the 4th Kansas Cavalry, which participated in all the campaigns of the free-state men during Bleeding Kansas. In that capacity Walker was present at the sieges of Lawrence and Fort Saunders, and commanded free-state forces on August 16, 1856 at the Battle of Fort Titus, which was a free-state victory. In 1856 Walker served as a member of the short-lived Territorial House of Representatives under the Topeka Constitution, and around the same time he also was a Deputy U.S. Marshal. Walker became the sheriff of Douglas County, Kansas in October 1857 and served until January 1862.
In mid 1865, Major General Grenville M. Dodge ordered an expedition as a punitive campaign against the Sioux, Cheyenne and Arapaho. Led by Brigadier General Patrick E. Connor, its strategy was to have three independently marching columns of soldiers converge upon the Sioux and Cheyenne in the Powder River Country. Walker was assigned command of the middle, or center column. The column was made up of eight companies of his own 16th Kansas Cavalry joined by Company H of the 15th Kansas Cavalry with two mountain howitzer cannon. He had an aggregate force of 600 mounted men. The column started north from Fort Laramie in early August 1865 and traversed the country west of the Black Hills in Dakota Territory. Marching into Montana Territory, the command suffered from bad water, weather, supply shortages, and harassing Indian attacks. Though the western column led by Connor was able to construct Fort Connor, the army was neither able to defeat the Indians nor to pacify the region. All of the forces in the field were recalled to Fort Laramie, and the 16th Kansas Cavalry along with Colonel Walker were mustered out in December 1865.
Later life
In 1865 Walker was named Major General of the Kansas Militia, and he held this rank for ten years. Walker served as the sheriff of Douglas County again, from 1868 to 1872, and as a City Marshall, to which he was elected in 1872. He was also a Republican in the State Senate from 1872 until 1874. Samuel Walker died on February 6, 1893, in Lawrence, Kansas, and is buried there in Oak Hill Cemetery.
