This man used the American merchant Oliver Pollock as his aide.
This man used the American merchant Oliver Pollock as his aide. After intercepting a letter to General John Campbell, this man led his troops to victories at the Battles of Baton Rouge and Fort Charlotte. In an episode of Liberty's Kids, he is voiced by Don Francisco, the host of Sabado Gigante.  For 10 points, name this Viceroy of New Spain, who assisted the American cause in the Revolution by defeating the British at Pensacola, and is the namesake of a bay and city in Texas. 
This man used the American merchant Oliver Pollock as his aide.
Bernardo de Galvez