In 1706 he furnished six smaller ships, thirty infantry soldiers and fifty Christianized Indian volunteers for a Franco-Spanish expedition to Charles Town led by the French privateer Capt.
He had faced the second-in-command of the Florida presidio (and later governor) Juan de Ayala y Escobar, because he captured English ships in South Carolina and was selling their cargoes of foodstuffs at a high price to a hungry population.
The plan was embraced by all parties concerned, except the Galicians, who rejected the crown's offer of free passage with money, seeds, and farming implements provided.
The plan was not carried out, but between 1757 and 1761, during the administration of Governor Alonso Fernandez de Heredia, over seven hundred Canarians immigrated to Florida to help develop agriculture in the province.
[8] Córcoles y Martínez's term of office as governor of La Florida ended on July 13, 1716; he was replaced by Juan de Ayala y Escobar.