On September 30, 1822, Joseph Marion Hernández becomes the to the United States Congress. Born a Spanish citizen, Hernández would die in Cuba, but in between he became the to serve at the highest levels of any of three branches of the American federal government.
Hernández belonged to a St. Augustine family that came to Florida as indentured servants. Despite these humble beginnings, records show that his family eventually became wealthy enough to own property and several slaves, and that Hernández was educated both in both Georgia and in Cuba. Throughout the 1810s, the United States made a variety of efforts to take Florida from the Spanish, finally succeeding after Andrew Jackson led an army through the territory in the First Seminole War. What Hernández did during this time is unclear, but he was either very savvy or very lucky—he fought the Americans during the war and received substantial amounts of land from the Spanish government, but then pledged loyalty to the United States and was allowed to keep his three plantations when the territory changed hands in 1819. It was then that Hernández changed his name from José Mariano to Joseph Marion.
The newly-acquired Florida Territory was allowed to elect a delegate to congress, but that delegate did not have voting privileges. Florida's legislative council elected Hernández to represent the territory. During his brief tenure—he served for less than a year before losing his re-election bid—Hernández was instrumental in facilitating the transition from Spanish to American government in Florida. In addition to securing the property rights of many Floridians who remained after the annexation, he also advocated for roads and infrastructure to bind the new territory together and make it an attractive candidate for statehood.
He went on to fight in the Second Seminole War, helping his adopted nation drive the natives from its new territory. The war saw the loss of two of his plantations, however, as well the destruction of his political ambitions after he was involved in an incident in which an American contingent captured a number of Seminoles despite approaching them under a flag of truce. Hernández later served as Mayor of St. Augustine before retiring to Cuba, where he died in 1857.
