San Juan, now a World Heritage Site. Returning to Cuba, O'Reilly married into a prominent Cuban family. His wife, Doña Rosa de Las Casas, was the sister of Luis de Las Casas, who served as governor of Cuba in the 1790s. O'Reilly was an uncle of Juan MacKenna, a hero of the Chilean War of Independence, as well as a cousin of Hugo Oconór, the founder of Tucson, Arizona, governor of Spanish Texas in the late 1760s and then governor of Yucatán in 1778. Captain General O'Reilly was appointed Governor and Captain-General of colonial Louisiana while in Spain in April 1769, with orders to immediately proceed to Havana, embark 3,000 troops there, put down the revolt in Louisiana, and re-establish order. Some French colonists, known as Creoles as they were born in the colony, had worked to expel the first Spanish governor after France ceded this territory. Arriving in New Orleans in August 1769, O'Reilly took formal possession of Louisiana. O'Reilly held trials and severely punished those French Creoles who were responsible for the expulsion of Spain's first colonial Governor Antonio de Ulloa (1716–1795), from the colony. He is remembered in New Orleans as "Bloody O'Reilly" because he had six prominent rebel French colonists executed, in October 1769. In December 1769 he allowed the Acadians who had settled in present-day Arkansas on the Mississippi River opposite Natchez to resettle on the Amite River near Lakes Maurepas and Pontchartrain. Other French rebels were exiled, and some were sent for life imprisonment in the Morro Castle in Havana. Having crushed the ringleaders who had led the Louisiana Rebellion of 1768 (the uprising against Ulloa and Spanish rule), O'Reilly sent most of his troops back to Cuba. He concentrated on organizing Louisiana's administration and on stabilizing the food supply. It had historically imported grains from northern French settlements along the Mississippi, as they could not be cultivated near New Orleans. O'Reilly reformed many French bureaucratic practices which were in place before Spanish rule. Again, as in his 1765 mission to Puerto Rico, O'Reilly's proclamations and rulings affected many aspects of life in Spanish Louisiana. He allowed slaves to purchase their freedom and enabled slave owners to more easily manumit slaves. He banned the trade of Native American slaves and abolished Indian slavery. He regularized the weights and measurements used in marketplaces, regulated doctors and surgeons, and improved public safety by funding bridge and