Diego de Rojas was a 16th century Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 Conquistador

Conquistador

Conquistadors were Spanish soldiers, explorers, and adventurers who brought much of the Americas under the control of Spain in the 15th to 16th centuries, following Europe's discovery of the New World by Christopher Columbus in 1492...

. He was born in Burgos

Burgos

Burgos is a city of northern Spain, historic capital of Castile. It is situated at the edge of the central plateau, with about 178,966 inhabitants in the city proper and another 20,000 in its suburbs. It is the capital of the province of Burgos, in the autonomous community of Castile and León...

 and traveled to the city of Santo Domingo

Santo Domingo

Santo Domingo, known officially as Santo Domingo de Guzmán, is the capital and largest city in the Dominican Republic. Its metropolitan population was 2,084,852 in 2003, and estimated at 3,294,385 in 2010. The city is located on the Caribbean Sea, at the mouth of the Ozama River...

 in 1516. In 1522 went to Mexico under the command of Hernan Cortes

Hernán Cortés

Hernán Cortés de Monroy y Pizarro, 1st Marquis of the Valley of Oaxaca was a Spanish Conquistador who led an expedition that caused the fall of the Aztec Empire and brought large portions of mainland Mexico under the rule of the King of Castile in the early 16th century...

, and subsequently formed part of the conquistador army of Pedro de Alvarado

Pedro de Alvarado

Pedro de Alvarado y Contreras was a Spanish conquistador and governor of Guatemala. He participated in the conquest of Cuba, in Juan de Grijalva's exploration of the coasts of Yucatan and the Gulf of Mexico, and in the conquest of Mexico led by Hernan Cortes...

, participating in the conquests of what is now Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, Guatemala

Guatemala

Guatemala is a country in Central America bordered by Mexico to the north and west, the Pacific Ocean to the southwest, Belize to the northeast, the Caribbean to the east, and Honduras and El Salvador to the southeast...

 and El Salvador

El Salvador

El Salvador or simply Salvador is the smallest and the most densely populated country in Central America. The country's capital city and largest city is San Salvador; Santa Ana and San Miguel are also important cultural and commercial centers in the country and in all of Central America...

.

In 1536 Rojas traveled to what is now Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

, as part of a corps of relief to help the army of Francisco Pizarro

Francisco Pizarro

Francisco Pizarro González, Marquess was a Spanish conquistador, conqueror of the Incan Empire, and founder of Lima, the modern-day capital of the Republic of Peru.-Early life:...

 in the Spanish conquest of the Inca Empire

Spanish conquest of the Inca Empire

The Spanish conquest of the Inca Empire was one of the most important campaigns in the Spanish colonization of the Americas. This historic process of military conquest was made by Spanish conquistadores and their native allies....

. Between 1538 and 1539 he participated in the conquest of the province of Charcas

Charcas

Charcas may refer to:* Charcas Province, a province in Potosí Department, Bolivia* Real Audiencia of Charcas, one of six political units of the Viceroyalty of Peru* Charcas, a historical name of Sucre, capital of Bolivia...

, in present-day Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

. After Ciudad de la Plata de la Nueva Toledo

Sucre

Sucre, also known historically as Charcas, La Plata and Chuquisaca is the constitutional capital of Bolivia and the capital of the department of Chuquisaca. Located in the south-central part of the country, Sucre lies at an elevation of 2750m...

 was founded he become its first governor. He became Justicia Mayor and along with Lope de Aguirre

Lope de Aguirre

Lope de Aguirre was a Basque Spanish conquistador in South America. Nicknamed El Loco, 'the Madman', Aguirre is best known for his final expedition, down the Amazon river, in search of the mythical El Dorado...

 explored the territory of the Chunchos Indians.

In 1543 he explored the Rio de la Plata

Río de la Plata

The Río de la Plata —sometimes rendered River Plate in British English and the Commonwealth, and occasionally rendered [La] Plata River in other English-speaking countries—is the river and estuary formed by the confluence of the Uruguay River and the Paraná River on the border between Argentina and...

 with 200 men at the orders of the governor of Peru Cristobal Vaca de Castro

Cristóbal Vaca de Castro

Cristóbal Vaca de Castro was a Spanish colonial administrator in Peru.-Background:...

. He died shortly afterwards in 1544 from the effects of a poisoned arrow in Santiago del Estero

Santiago del Estero Province

Santiago del Estero is a province of Argentina, located in the north of the country. Neighbouring provinces are from the north clockwise Salta, Chaco, Santa Fe, Córdoba, Catamarca and Tucumán.-History:...

.