West Florida Republic and St. Tammany Parish.
St. Tammany Parish was among the Spanish-governed West Florida parishes and not included in the Louisiana Purchase of 1803. Residents revolted against Spanish rule September 1810, creating the Republic of West Florida. The republic lasted 74 days, raising a new flag and electing a president, before being forcibly annexed by the U.S. in December 1810.
68099 Louisiana 59, Mandeville, United States