San Marcos were burned to the ground following the siege by British Governor James Moore of Carolina. After this, it was decided to rebuild the monastery with the same durable coquina used in the construction of the fort. Construction finally began in 1735 using coquina stone quarried at the King's Quarry located on Anastasia Island across Matanzas Bay from St. Augustine. The Franciscan friars lived at the monastery until the British took possession of Florida in exchange for occupied Havana which they seized from the Spanish in the French and Indian War. Almost the entire population of Catholic St. Augustine left the city upon the British taking control in 1763 including the Franciscan friars and many of their Native American converts. The British, a large majority of whom were Protestant converted the friars former living quarters into military barracks for the troops stationed at the newly christened Fort St. Marks, the anglicized version of the Castillo de San Marco. During the British Period of occupation, the military constructed an additional wooden barracks behind the coquina stone, St. Francis Barracks. They also constructed The King's Bakery, a coquina stone structure used for baking the bread for the city's garrison. This structure, which has been used as a garage by the Florida National Guard since 1930, is located perpendicular to the barracks across Marine Street. It is believed to be the only structure surviving in St. Augustine built entirely during the British Period (1763–1784). After signing the Treaty of Paris, the British who conceded defeat in the American Revolution agreed to relinquish control of the Florida Territory, restoring Spain's possession of the land. Upon returning the Spanish military continued to use the St. Francis Barracks, as a military installation and troop barracks. During this period known as the Second Spanish Period (1763–1821) the wooden barracks built by the British were torn down. U.S. period / U.S. military installation St. Francis Barracks came under control of the United States Army when the United States gained possession of Florida in 1821. The Barracks would remain an active U.S. Army installation until it was deactivated in 1900, with the exception of one year between 1861–1862 when it, like the rest of St. Augustine was under control of the Confederate States of America. In 1828, a portion of the southern end of the St. Francis Barracks military reservation was set aside as a post cemetery. In