Francois le Sueur was born in Charlesmesnil or Colmesnil-Manneville, boroughs or market towns that are located a few miles south of Dieppe, in Normandy, France. [modern day: Seine-Maritime, Haute-Normandie, France]. His name, which his descendants transformed into Leseur, Lesier, Lazear and Lozier, was well established in the Caux region, and, a century beforehand was noted among the clothiers (cloth manufacturers) of Rouen.. In the 17th century, Dieppe was the premier port of France. After the Revocation of the Edict of Nantes in 1685, Dieppe lost 3,000 of its Huguenot (Protestant) citizens, who fled abroad to escape religious persecution.
Francois le Sueur, was the ancestor of the families of Leseur and Lozier, now mostly living in New York City and Bergen County, NJ.
Francois le Sueur was born on April 16, 1625 in Charlesmesnil or Colmesnil-Manneville, boroughs or market towns that are located a few miles south of Dieppe, in Normandy, France. [modern day: Seine-Maritime, Haute-Normandie, France].  (6 km. south of Dieppe).
Note that the two communities, Charlesmesnil and Colmesnil-Manneville are approximately 3 miles apart. Challe Mesnil was a distortion of the original name: "Charlesmesnil". It doesn't exist on modern maps.
Dieppe was one of the principal sea ports of northern France; a center of the fabric industry; with a large concentration of French Huguenots (Protestants). With the rise of anti-Protestant discrimination in France, culminating in the Revocation of the Edict of Nantes in 1685, Dieppe lost 3,000 of its Huguenot citizens, who fled abroad. Dieppe also housed the most advanced French school of cartography in the 16th century. Possibly this was the source of Francois le Sueur's education in map making, which he exercised in laying out Nieuw Haarlem, Nieuw Nederlands [Dutch North America].
Francois le Sueur's parents were:
Father: Jean le SEUER
Mother: Marye GRUIER
Emigration to Manhattan
Francois le Sueur emigrated with his younger sister Jeanne le Sueur from France to Manhattan shortly after July, 10, 1657. The island was then part of Nieuw Amsterdam, and ruled by the United Netherlands, a Protestant nation. Many French Huguenots fled to the Netherlands and Dutch settlements at this time as their religious views were very similar and the Dutch welcomed these skilled-artisan refugees.
Siblings Jeanne and Francois le Sueur were on the same ship as Jean Gervoe, who married in France on July 10, 1657, and sailed to Manhattan with his new wife and step son.
Francois first lived in Flatbush, Long Island, (then New Netherlands) in 1657 after coming to Manhattan, and then moved to Nieuw Haarlem, in the northern part of Manhattan island.
Francois le Sueur married Jannetie Hillebrands|Hillebrants, daughter of Hillebrand Pietersen., of Amsterdam, on 12 July 1659, in the Dutch Church, New Amsterdam, New York. (in which year Jannetie's brother, Pieter Hillebrands|Hillebransen, was captured by Indians at Esopus; but this did not deter her from later removing there with her Francois.) 
Note: Jannetie and her brother used Hillebrands Hillebrandzen, or Hillebrants interchangeably for church and court appearances. There is no found record that they ever spelled the name as "Hildebran" [XX].
Removal to Esopus
Francois left Harlem after March 9th, 1662, moving north up the Hudson River to Esopus, aka Wiltwijck [near Kingston, Ulster County, NY], accompanied by his sister Jeanne, who afterwards married Cornelis Viervant there. The reasons for this move were lower taxes in Esopus and their need to pay for the land they had settled at New Harlem.
Before leaving Harlem Francois sold some of his belongings, and his wife Jannatie|Jeanne bought "a little bed," etc., at Sneden's sale. 
Francois le Sueur's sister, Jeanne, went with them to Esopus, and married Cornelis Viervant there in 1688. This marriage was recorded at the Reformed Dutch Church of Kingston, Ulster, NY. Jeanne later returned with her husband to Harlem. 
The known children of Francois le Sueur and Jannatie (Jeanne) Hillebrands Pietersen le Sueur were:
1) Jannetje le Sueur|Leerhie|Lozier, daughter, bp. ca. August 22, 1660, at the Dutch Reformed Church, Nieuw Amesterdam [New York, New York]., m. Jan Jansen Postmael (or Post), and Thomas Innis Children:
Anna Catryn Postma, b. April 6, 1684, bp at KRDC
2) Hillebrant le Sueur|Lesier|Lozier, son, b. November 4, 1663, at Esopus, NY, USA. His parents removed from New Harlem to Esopus some time after March 9th, 1662. Hillebrand was 8 years of age at the death of his father Francois Le Sueur in 1771. He m1. Elsie Jurians Tappen, dau. of Jurian Tappen, but soon died, leaving apparently but one child, Jannetie, born I689, who married William Elting.
3) Jan (John) le Sueur|Leeseer, Twin son, b. July 26, 1665, at Esopus, NY, bp. at KRDC 
4) Jacob le Sueur|Leeseer, Twin son, b. ca. July 26, 1665, at Esopus[Kingston], NY; bp. at KRDC ; d. July 26, 1665.
5) Nicholas le Sueur|Laschere|Lozier|Lachaire, son, "Claus", "Lozier", "Le Sueur" , b. ca. June 10, 1668, at New York Baptism was recorded at the Reformed Dutch Church of New York. Nicholas, m. Trijntje Catherine Slot .
Francois le Sueur was living in 1670, but it is recorded that on Nov. 30, 1671, his widow Jannatie|Jeanne Le Sueur, bound out her son Hillebrant who was then 8 years old. This indicates the Francois le Sure must have died before Nov. 30, 1671, at Harlem, New York.. Son Hillebrand/Hillebrant was engaged by the deacons, in 1673, to ring the bell at five guilders a year..
After Francois le Sueur's death, his widow, Jannatie le Sueur, married Antoine (Anthony) Tilba|Delva|D'Elva|D'Elba, and had additional children by him.
One repeated rumor states that Francois le Sueur explored the upper reaches of the Mississippi and that he was a civil engineer, but no evidence could be found to support this claim. . This may be a confusion with Pierre-Charles le Sueur (1657-1704). 
Another false conclusion is that the French artist Eustache le Sueur (19 Nov 1617 – 30 Apr 1655) was Francois le Sueur’s brother. Eustache, one of the founders of the French Academy of Painting, was born in Paris, France, where he lived his entire life . For an opposing view (that they were siblings), see: The Patricians; Eustache le Sueur 1617-1655, written by a descendant of Francois le Sueur. The data is unproven.
↑ 1.01.11.21.188.8.131.52.7 Revised history of Harlem (City of New York): its origin and early annals...Riker, James, 1822-1889; page 50.
Kingston Church Records: The Reformed Dutch Church, now known as the Old Dutch Church of Kingston, NY; Source of: Marriage Records (1660-1809); Baptism Records (1660-1809; Burial Records (1696-1881. Hoes, Roswell Randall. The Kingston Reformed Dutch Church was the central repository for all records of marriages and baptism conducted by circuit-rider Domines throughout Ulster and Orange counties of NY; Sussex County, NJ, and parts of Pike County, PA, until local churches were built and staffed. This occurred between 1735 and 1745 depending on the area.
Family Tree files submitted by Ancestry members. Ancestry Family Trees, Provo, UT, USA: Ancestry.com.
Source: S81 Title: Pre-Revolutionary Dutch Families New York, New Jersey Abbreviation: PreRevDutchNYNJ
Source: S73 Sons of the American Revolution Membership Applications, 1889-1970. Louisville, Kentucky: National Society of the Sons of the American Revolution. Microfilm, 508 rolls; Repository: #R1
Lesueur-45 was created by _____
LeSueur-8 was created through the import of davisfamilytree-1.ged on Sep 1, 2012 by Rich Davis.
Lesueur-45 was merged into LeSueur-8 on 10-18-2014
Le Sueur-3 was created through the import of FISCUS Family Tree.ged on Jun 6, 2011 by Liisa Small.
LeSueur-8 was merged into le_Sueur-27 [LNAB set] le_Sueur is correct as per French usage.
Lozier-72 was created through the import of davisfamilytree-1.ged on Sep 1, 2012 by Rich Davis. Merged into le Sueur-27
WikiTree profile Le Sueur-22 was created by Janice Lacross through the import of Web Ged.ged on Jun 5, 2014. It was merged into profile le Sueur-27 by Chet Snow, Leader of the Huguenot Migration Project, on August 9, 2016. He also merged WT profile D'lozier-1 into le_Sueur-27 on Sept. 17, 2016.
Thank you to Mike Petry for creating WikiTree profile D'lozier-1 through the import of Sarah's Family Tree_2013-08-31.ged on Aug 31, 2013. Click to the Changes page for the details of edits by Mike and others.
Page 196. Francois le Sueur, who left the town early in 1663, was the ancestor of the families of Leseur and Lozier, now mostly seated in New York City and Bergen County, N. J.
Hillebrand married, 1688, Elsie, daughter of Jurian Tappen, but soon died, leaving apparently but one child, Jannetie, born I689, who married William Elting. Hillebrand's widow married Abraham Delamater, previously of Harlem.
John, of Kingston, married Rachel Smedes, in i686, was an elder of the church, and quite distinguished. He had Jannetie, born I687, John, born I689, Catherine, born I692, etc., of whom the first married Abraham Low.
Nicholas, whose branch of the family write their name Lozier, married at New York, May 8, I691, Tryntie, daughter of Peter Slot. He afterward left Kingston and settled near Hackensack, where he married, in January, 1709, Antie, daughter of Derick Banta. His children were, Hillebrand, born i695; Peter, born I697; John, born I699; Mary, born 17oI; Antie, born 1703; Lucas, born I705; Jacobus, born 1707; Benjamin, born 1708; Tryntie, born 171o; Hester, born 1711; Rachel, born I714; Jacob, born 1719; Abraham, born 1721; Leah, born 1723, and Margaret, born I726. These intermarried with the Demarests and others, but we must here leave them. In Ulster County the French pronunciation of this name was, for a time, tolerably preserved in the form Lashier, but is now extinct there, though the blood runs in the Post family and others.