The name Gonzalo is of Spanish origin, derived from the Visigothic name Gundisalvus, which is composed of the Germanic elements "gund" meaning "battle" and "salvo" meaning "safe". It emerged during the period of Visigothic rule in the Iberian Peninsula, which lasted from the 5th to the 8th century AD.

The earliest recorded use of the name Gonzalo can be traced back to the 9th century, when it appeared in medieval Spanish documents and chronicles. It gained widespread popularity during the Reconquista, the period of Christian conquest over Moorish territories in the Iberian Peninsula, which lasted from the 8th to the 15th century.

One of the most notable historical figures with the name Gonzalo was Gonzalo Fernández de Córdoba (1453-1515), a Spanish military leader known as "El Gran Capitán" (The Great Captain). He played a crucial role in the Reconquista and is celebrated for his military victories against the French in Italy.

Another famous bearer of the name was Gonzalo Pizarro (c. 1502-1548), a Spanish conquistador and the younger half-brother of Francisco Pizarro, the conqueror of Peru. Gonzalo led an expedition into the Amazon basin and was later executed for leading a rebellion against the Spanish crown.

In the realm of literature, Gonzalo de Berceo (c. 1196-1264) was a Spanish poet and one of the most important figures in the development of Castilian vernacular literature. His works, such as the "Milagros de Nuestra Señora" (Miracles of Our Lady), are considered masterpieces of medieval Spanish poetry.

Gonzalo Guerrero (c. 1470-1536) was a Spanish sailor and one of the first Europeans to settle in Mexico. He was shipwrecked on the Yucatán Peninsula and became integrated into Mayan society, even fighting against Spanish conquistadors alongside the Maya.

Gonzalo Fernández de Oviedo y Valdés (1478-1557) was a Spanish historian and writer who served as a colonial administrator in the West Indies. His work "Historia General y Natural de las Indias" (General and Natural History of the Indies) is a valuable source of information about the early Spanish colonization of the Americas.