County Origins
Lamar County Was Founded in 1840 and Named for a Republic President
Lamar County was created by the Republic of Texas in 1840 and named for Mirabeau B. Lamar, the fourth president of the Republic.
The Fifth Congress of the Republic of Texas established Lamar County on December 17, 1840. It was named for Mirabeau B. Lamar, who served as the fourth president of the Republic of Texas. Paris became the county seat in 1844, when merchant George W. Wright donated fifty acres for the townsite. Thomas Poteet, one of Wright's employees, named the new town after Paris, France.
The county covers about 919 square miles in North Texas along the Oklahoma border. The Red River marks the north boundary. Cotton farming drove the early economy, and multiple railroads arrived between 1876 and 1910, making Paris a regional hub. The town was incorporated by the Congress of the Republic of Texas on February 3, 1845.
Source to confirm: Handbook of Texas — Lamar County