12/14/1837, the First Texas Congredss passed a measure establishing Robertson County from portions of Milam, Bexar and Nacogdoches counties and naming it in honor of Sterling Robertson. When the county was organized in 1838, Franklin became the county seat. (usually called Old Franklin today to differentiate it from the new Franklin, which is presently the county seat.) Old Franklin was headquarters for the surveyors of a land district including present Leon, Freestone, Limestone, Navarro, and other counties.) Over the next 9 years, 16 counties were carved from the original jurisdiction, and the county assumed its present size in 1846. In 1850 the residents voted to move the county seat from Old Franklin to Wheelock.6 years later the county seat was moved to the new town of Owensville. In 1878 the county seat was moved to Morgan, on the railroad. When Morgan applied for a post office, it was renamed Franklin in honor of the original county seat. -Handbook of Texas Online: Robertson County