Andrea Corsali was an Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 explorer who worked in the service of Giuliano di Lorenzo de' Medici

Giuliano di Lorenzo de' Medici

Giuliano di Lorenzo de' Medici was an Italian nobleman, one of three sons of Lorenzo the Magnificent.-Biography:He was born in Florence, Italy. His brothers were Piero and Giovanni de' Medici....

 of Florence

Florence

Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

 and Lorenzo II de' Medici, duke of Urbino

Urbino

Urbino is a walled city in the Marche region of Italy, south-west of Pesaro, a World Heritage Site notable for a remarkable historical legacy of independent Renaissance culture, especially under the patronage of Federico da Montefeltro, duke of Urbino from 1444 to 1482...

. Corsali traveled to Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

 and the south seas aboard a Portuguese merchant vessel, writing home with accounts of the lands and peoples he encountered along the way. Two of Corsali’s letters from the 'east Indies

East Indies

East Indies is a term used by Europeans from the 16th century onwards to identify what is now known as Indian subcontinent or South Asia, Southeastern Asia, and the islands of Oceania, including the Malay Archipelago and the Philippines...

' were published in Florence in 1518, and again in Giovanni Battista Ramusio

Giovanni Battista Ramusio

Giovanni Battista Ramusio was an Italian geographer and travel writer.Born in Treviso, Italy, Ramusio was the son of Paolo Ramusio, a magistrate in the city-state of Venice...

, Delle navigationi et viaggi (Venice

Venice

Venice is a city in northern Italy which is renowned for the beauty of its setting, its architecture and its artworks. It is the capital of the Veneto region...

, 1550), along with accounts by other travelers and merchants such as Giovanni da Empoli

Empoli

Empoli is a town and comune in Tuscany, Italy, about 20 km southwest of Florence, to the south of the Arno in a plain formed by the latter river. The plain has been usable for agriculture since Roman times. The commune's territory becomes a hilly one as it departs from the river...

 (1483-1518). He also noted that Sumatra

Sumatra

Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

 and Ceylon (Sri Lanka) are two distinct islands (ancient geography confused them with the name of Taprobane). Corsali’s death date is unknown.

Corsali is known in Italy for having identified New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

, previously unknown to the Italians, and for having hypothesized the existence of Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, although he never disembarked there himself.