Early History
Indigenous peoples lived in Gregg County before Anglo settlement
The area that is now Gregg County was home to Caddo peoples and later Cherokee immigrants before Anglo settlers arrived in the 1840s.
The Caddo people lived in this part of East Texas for centuries before European contact. Cherokee people, displaced from the eastern United States, later moved into the region. In 1839, the Republic of Texas forcibly removed the Cherokee from East Texas.
Anglo settlers from the American South began moving into the area after Texas joined the United States in 1845. By 1860, the region had nine rural post offices but no towns. Cotton farming and timber harvesting defined early settlement. Gregg County was officially carved out of Upshur County in 1873. The Handbook of Texas covers this history in detail.
Source to confirm: Handbook of Texas Online — Gregg County