Alvar Nuñez Cabeza de Vaca, who discovered Florida, was the son of a Jerez wine grower

All his [Columbus'] efforts, his intrigues with the Church and the monarchy, his triumphs and disappointments, the elaborate preparations for his voyages, the voyages themselves, all were centred on Andalusia. From Andalusia he gathered his forces, and many of the men came from the Sherry towns. He set forth from Sanlúcar de Barrameda on his third journey, to discover the island of Trinidad in 1498, and Sanlúcar was soon established as a major port for the new American trade; it was the port from which Pizzaro set sail twenty-five years later on his way to conquer Peru. Alvar Nuñez Cabeza de Vaca, who discovered Florida, was the son of a Jerez wine grower.

J. Jeffs, Sherry (6th edition, 2016), 12