UNZAGA, Luis de (oon-thah'-gah), Spanish soldier, born about 1720; died in Spain about 1790. He early entered military service, and, after taking part in the operations of Charles of Naples against Austria, was promoted brigadier, and in 1769 appointed governor +f Louisiana, to succeed Alexander O'Reilly, who, by his rigorous measures against the opposition to Spanish annexation, had incurred the dislike of the creoles, and was removed by the home government. Unzaga, by his conciliatory policy, soon repaired the evils that had arisen under O'Reilly, and in 1776 was promoted and appointed captain-general of Caracas, whence he returned in 1783 to take charge of the general government of Cuba. One of his first measures was to prohibit the unrestrained cutting of cedar-wood, as this useful tree was threatened with extinction by enormous exportation and waste at home. When, in the same year, by the treaty of Versailles, Florida was restored to Spain, more than 5,000 former residents of that province, who had settled in Cuba, returned to their homes, and, to offset this loss of labor, Unzaga contracted with several French and English firms for the importation of 15,000 negroes. In February, 1785, he was superseded by Count Bernardo de Galvez, and he then returned to Spain.