[1] The community had its start as a small trading post located on the St. Marys River, which is the border between East Florida and Georgia.
The first governor of British East Florida, Colonel James Grant, financed the creation of a portion of King's Road, stretching from New Smyrna Beach in FL and terminating in Coleraine.
It was also the site of the signing of the Treaty of Colerain between the Creeks and the United States government on June 29, 1796.
The treaty expanded the U.S.-Creek border westward, allowed for Fort Wilkinson's construction, and mandated the removal of the factory there.
[2][3][4] The Federal Military Road, beginning in Colerain and running south through Clark's Ferry, Florida down to Tampa,[5] was constructed between 1824 and 1827 as part of the Federal government's plan to develop military infrastructure in the area and increase the population of white settlers.