 In 1693, Mexican Viceroy Gaspar de Sandoval Silva y Mendoza, the Conde de Galve (1688–1696), sent General Andrés de Pez to explore the north Gulf coast from Pensacola Bay to the mouth of the Mississippi River.Carlos de Sigüenza y Góngora, a renowned Mexican scientist, mathematician and historian, accompanied Pez.The Pez-Sigüenza expedition consisted of two ships, leaving Veracruz in late March 1693 and reaching Pensacola in early April.