Guillaume Courtois called "Il Borgognone", was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 painter

Painting

Painting is the practice of applying paint, pigment, color or other medium to a surface . The application of the medium is commonly applied to the base with a brush but other objects can be used. In art, the term painting describes both the act and the result of the action. However, painting is...

 and etcher, the brother of the Jesuit

Society of Jesus

The Society of Jesus is a Catholic male religious order that follows the teachings of the Catholic Church. The members are called Jesuits, and are also known colloquially as "God's Army" and as "The Company," these being references to founder Ignatius of Loyola's military background and a...

 painter Jacques Courtois

Jacques Courtois

Jacques Courtois was a French painter.-Biography:He was born at Saint-Hippolyte, near Besançon. His father was a painter, and with him Jacques remained studying up to the age of fifteen...

. His working career was spent in Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

. He is also known as Guglielmo Cortese.

Like his brother, he was born in Saint-Hippolyte

Saint-Hippolyte, Doubs

Saint-Hippolyte or Saint-Hippolyte-sur-le-Doubs is a commune in the Doubs department in the Franche-Comté region in eastern France.-Geography:The town lies south of Montbéliard on the banks of the Doubs River.-Population:-Personalities:...

, Doubs in France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 to a painter. Together, father and sons went to Italy

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...

 when Guillaume was still a child.

He arrived in Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 by 1638, and entered the studio of Pietro da Cortona

Pietro da Cortona

Pietro da Cortona, by the name of Pietro Berrettini, born Pietro Berrettini da Cortona, was the leading Italian Baroque painter of his time and also one of the key architects in the emergence of Roman Baroque architecture. He was also an important decorator...

, supplementing his training by drawing from life and copying works of Giovanni Lanfranco

Giovanni Lanfranco

Giovanni Lanfranco was an Italian painter of the Baroque period.-Biography:Giovanni Gaspare Lanfranco was born in Parma, the third son of Stefano and Cornelia Lanfranchi, and was placed as a page in the household of Count Orazio Scotti...

 and Andrea Sacchi

Andrea Sacchi

Andrea Sacchi was an Italian painter of High Baroque Classicism, active in Rome. A generation of artists who shared his style of art include the painters Nicolas Poussin and Giovanni Battista Passeri, the sculptors Alessandro Algardi and François Duquesnoy, and the contemporary biographer Giovanni...

. He studied also the Bolognese

Bologna

Bologna is the capital city of Emilia-Romagna, in the Po Valley of Northern Italy. The city lies between the Po River and the Apennine Mountains, more specifically, between the Reno River and the Savena River. Bologna is a lively and cosmopolitan Italian college city, with spectacular history,...

 painters and Giovanni Barbieri

Giovanni Francesco Barbieri

Giovanni Francesco Barbieri , best known as Guercino or Il Guercino, was an Italian Baroque painter from the region of Emilia, and active in Rome and Bologna. Guercino is Italian for 'squinter', a nickname that was given to him because he was cross-eyed...

, and formed for himself a classicizing style with very little express mannerism

Mannerism

Mannerism is a period of European art that emerged from the later years of the Italian High Renaissance around 1520. It lasted until about 1580 in Italy, when a more Baroque style began to replace it, but Northern Mannerism continued into the early 17th century throughout much of Europe...

, partly resembling that of Carlo Maratta

Carlo Maratta

Carlo Maratta or Maratti was an Italian painter, active mostly in Rome, and known principally for his classicizing paintings executed in a Late Baroque Classical manner. Although he is part of the classical tradition stemming from Raphael, he was not exempt from the influence of Baroque painting...

.

He painted the Battle of Joshua in the Gallery of the Quirinal Palace

Quirinal Palace

The Quirinal Palace is a historical building in Rome, Italy, the current official residence of the President of the Italian Republic. It is located on the Quirinal Hill, the tallest of the seven hills of Rome...

, the Crucifixion of St Andrew in Sant'Andrea al Quirinale

Sant'Andrea al Quirinale

The Church of Saint Andrew's at the Quirinal is a Roman Catholic titular church in Rome, built for of the Jesuit seminary on the Quirinal Hill....

, various works for the Jesuits, some also in co-operation with his brother. His last production was Christ admonishing Martha.

Encyclopaedia Britannica 1911 found that "His draughtsman

Drawing

Drawing is a form of visual art that makes use of any number of drawing instruments to mark a two-dimensional medium. Common instruments include graphite pencils, pen and ink, inked brushes, wax color pencils, crayons, charcoal, chalk, pastels, markers, styluses, and various metals .An artist who...

ship is better than that of Jacques, whom he did not, however, rival in spirit, colour or composition." Guillaume Courtois died of gout

Gout

Gout is a medical condition usually characterized by recurrent attacks of acute inflammatory arthritis—a red, tender, hot, swollen joint. The metatarsal-phalangeal joint at the base of the big toe is the most commonly affected . However, it may also present as tophi, kidney stones, or urate...

on June 15, 1679.