Étienne de Carheil (20 November 1633 – 27 July 1726) was a French Jesuit priest who became a missionary to the Iroquois and Huron Indians in the New World.
 He served as the chief Jesuit missionary to the Native Americans of the Straits of Mackinac area from 1686 until about 1702.
 In this duty, he clashed often with the secular leader of Fort de Buade, the French commandant Antoine de la Mothe Cadillac.
Saint John de Britto (also spelled "Brito"; Portuguese: "João de Brito" ), also known as Arul Anandar, (born in Lisbon, Portugal on 1 March 1647 – died at Oriyur, Tamil Nadu, India on 11 February 1693) was a Portuguese Jesuit missionary and martyr, often called 'the Portuguese St Francis Xavier' by Indian Catholics.
 He can be called the John the Baptist of India.
Joseph Aubery (born at Gisors in Normandy, 10 May 1673; died at Saint-François, Quebec, Canada, 2 July 1755 was a French Jesuit missionary in Canada.
 Chateaubriand reproduces the life-story of Father Aubery in the character of the missionary in his "Atala".
Joseph-François Lafitau (] ; May 31, 1681 – July 3, 1746) was a French Jesuit missionary, ethnologist, and naturalist.
 He is best known for his use of the comparative method in the field of scientific anthropology, the discovery of ginseng, and his writings on the Iroquois.
 Lafitau was the first of the Jesuit missionaries in Canada to have a scientific point of view.
 Francis Parkman praises Lafitau, stating, “none of the old writers are so satisfactory as Lafitau.”
Father Jacques Marquette S.J. (June 1, 1637 – May 18, 1675), sometimes known as Père Marquette or James Marquette, was a French Jesuit missionary who founded Michigan's first European settlement, Sault Ste. Marie, and later founded St. Ignace, Michigan.
 In 1673 Father Marquette and Louis Jolliet were the first Europeans to explore and map the northern portion of the Mississippi River.
Léon Wieger (born July 9, 1856 in Strasbourg, France - died March 25, 1933 in Xian County, Hebei, China), was a French Jesuit missionary, medical doctor, theologist and sinologist who worked at the Catholic Jesuit mission in Hejian, together with Séraphin Couvreur.
Sainte-Marie among the Hurons (French: Sainte-Marie-au-pays-des-Hurons ) was a French Jesuit settlement in Wendake, the land of the Wendat, near modern Midland, Ontario, from 1639 to 1649.
 It was the first European settlement in what is now the province of Ontario.
 Eight missionaries from Sainte-Marie were martyred, and were canonized by the Catholic Church in 1930.
 Sainte-Marie Among the Hurons was designated a National Historic Site of Canada in 1920.
 A reconstruction of the mission now operates as a living museum.
St. Francois County is a county located in the Lead Belt region in the U.S. state of Missouri.
 As of the 2010 census, the population was 65,359.
 The largest city and county seat is Farmington.
 The county was officially organized on December 19, 1821.
 It was named after the St. Francis River.
 The origin of the river's name is unclear.
 It might refer to St. Francis of Assisi.
 Another possibility is that Jacques Marquette, a Jesuit who explored the region in 1673, named the river for the Jesuit missionary Francis Xavier.
 Marquette had spent some time at the mission of St. Francois Xavier before his voyage and, as a Jesuit, was unlikely to have given the river a name honoring the Franciscans.
Pierre Cholenec (June 29, 1641 – October 30, 1723) was a French Jesuit missionary and biographer in New France.
 He administered to First Nations in present-day Canada, particularly at the village of Kahnawake south of Montreal.
 He served as superior of the Jesuit residence in Montréal.
Jean de Quen (May, c. 1603 at Amiens, France – 8 October 1659 in Quebec) was a French Jesuit missionary, priest and historian who discovered Lac Saint-Jean.
 As head of Jesuit missions of New France, he founded the missions to Saguenay.
 Jean de Quen was the first European to see Lake Piékouagami (Lake Saint-Jean).

Question: Who was the French Jesuit missionary who founded Michigan's first European settlement and possibly named the St Francis River?
Answer: Jacques Marquette