Old Gibbs Store. Old Gibbs Store, oldest business in Texas under original ownership and on first site. Established 1841 in Republic of Texas by Thomas Gibbs. Building erected in 1847 after Sandford Saint John Gibbs joined firm. General Sam Houston was steady customer of the partners, who became bankers after lending use of their safe to neighbors. Gibbs National Bank, established 1890, was forerunner of First National Bank, established 1922. #8455