The Person:
Not much is said about Andrew Jackson Davis. I am unable to find much info on him. This individual should NOT be confused with the spiritualist of the same name.
From the State Historical Society Website on Andrew Jackson Davis:
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"It was named in honor of Andrew Jackson Davis, a prominent lawyer of St. Louis and formerly of Savannah, the county seat of this county."
The Place:
From the Wikipedia page for Andrew County, Missouri:
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"Andrew County is a county located in the northwestern part of the U.S. state of Missouri. As of the 2010 census, the county had a population of 17,291. Its county seat is Savannah. The county was organized January 29, 1841 and named for Andrew Jackson Davis, a lawyer and prominent citizen of St. Louis.
Andrew County is part of the St. Joseph, MO-KS Metropolitan Statistical Area, which is included in the Kansas City, Missouri, Kansas City metropolitan area.
Andrew County, organized 1841, is one of six counties in the Indian Platte Purchase Territory annexed to Missouri in 1837. Named for Andrew Jackson Davis, a St. Louis editor, the county was first settled in the middle 1830s. Pioneers were from Ohio, Indiana, Tennessee, Kentucky, Virginia, and other parts of Missouri.
Savannah, the county seat, was laid out in 1841. First briefly called Union, it was renamed for Savannah, Georgia. The Platte County Railroad (CB&Q) reached there in 1860, and today's Chicago, Great Western in the late 1880s. The town grew as a shipping point and trading center in the post Civil War era.
Divided during the Civil War, Andrew County sent troops to both sides. In August 1861, 1,500 soldiers from Andrew County and other counties joined the pro-Southern Missouri State Guard at Camp Highly in eastern Andrew County while others joined a large Union cap in adjacent Gentry County. In 1861, Union troops seized "Northwest Democrat," a pro-Southern newspaper, in Savannah and troops from Camp Highly seized the "Plain Dealer," a Union newspaper. Raiding guerrilla bands overran the county through 1863.
Andrew County's glacial plains support fertile livestock, grain, and fruit farms. The One Hundred and Two River, along with the Platte River, are located in the county. Its western border is formed by the Nodaway and Missouri rivers. In 1804 the Lewis and Clark Expedition camped on an island at the mouth of the Nodaway River. Members of fur trader W. Price Hunt's 1811 Astorian expedition wintered near the river’s mouth as well.
Among the towns located in Andrew County are Amazonia, once on the Missouri River, now inland, laid out in 1857 near the site of Nodaway City, an early river port; Fillmore, established in 1845; Whitesville, established in 1848; Rochester, established in 1848; Bolckow, established in 1868; Rosendale, established in 1869; Rea, established in 1877; Helena, established in 1878; and Cosby, established in 1882.
The Andrew County Museum & Historical Society celebrates the history of Andrew County through exhibits, programs, publications, and special events. The museum and society collects, preserves, researches, and interprets documents and artifacts to promote the appreciation and preservation of the county's history and bring history to life in Andrew County."