1490? – Álvar Núñez Cabeza de Vaca was born this year; he was an early Spanish explorer of the New World.
Explored the U.S. states of Texas, New Mexico and Arizona on foot from coastal Louisiana to Sinaloa, Mexico.
1537 – He went on to Mexico City and returned to Europe.
1540 – Appointed governor of Río de la Plata, in what is now Paraguay, Argentina and surroundings.
1542 – He wrote about his experiences in a report for Emperor Charles V and was published this year.
1545 – Political intrigue against him caused his arrest in Asunción and return to Spain.