José Ramon Fernández, 1st Marquis of La Esperanza (1808–1883), was the wealthiest sugar baron in Puerto Rico in the 19th century. He was also one of the most powerful men of the entire Spanish Caribbean. He owned an immense plantation of nearly 2300 acres on the northern coast of Puerto Rico, and a sugar mill with an advanced steam engine. His wealth and political connections gave him the power to convince the Spanish Colonial government in the island to split the municipality of Manati in two, and thus found the municipality of Barceloneta.