The conquest of Yucatán was completed two decades after the conquest of Mexico; by Francisco de Montejo "el Adelantado", his son Francisco de Montejo y León "el Mozo" and his nephew, Francisco de Montejo "el Sobrino". "El Adelantado" was in the expedition of Juan de Grijalva and was with Hernán Cortés in the third expedition that eventually became the Conquest of Mexico. He was subsequently appointed for the conquest of the Maya of Yucatán, but failed in his first attempt in 1527–28. In 1529 he was appointed Governor of Tabasco, with the order to pacify Tabasco and conquer Yucatán and Cozumel.