Clark County was one of the five counties in existence at the time Arkansas became a Territory in 1819. The county’s center of government and business activity has traditionally been the county seat. It was the place where early citizens came into direct contact with government, whether it be to assess personal property, pay real estate taxes, obtain a marriage license, or register to vote. Court was held in various places in territorial Clark County, such as the home of pioneer Jacob Barkman, west of the Caddo River, near what is now Caddo Valley. Later, a county seat was established at Greenville, on the Military Road (also known as the Southwest Trail).
Richter, Wendy Bradley, "Greenville, Clark County Seat" (2016). Articles. 233.