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Last Name Cosnard

What is the origin of the last name Cosnard?

The surname Cosnard is a French patronymic name derived from the given name Côme or Comes, which is a form of the Latin name Commodus, meaning "fortunate" or "favorable." This name was popular among the upper class in the Middle Ages, and it evolved into various forms over time. The surname Cosnard likely originated as a nickname for someone who had characteristics associated with the given name Côme, such as being fortunate or favorable. The -ard ending is a common French diminutive suffix that was added to names to create affectionate or descriptive nicknames.

Learn more about the origin of the last name Cosnard

The meaning and origin of the last name Cosnard

The surname Cosnard is a French name of Norman origin. It derives from the Old Norse personal name "Kolr" or "Kols", which means "coal-black," and the Old Norse suffix "-ard," meaning "ard." This indicates that the original bearer was possibly nicknamed for physical traits associated with the color black. The name evolved over time, with variations such as Cousnard and Cosnier in France. As a result of the Norman Conquest of England in 1066, many Normans moved to England and carried their names with them, including the surname Cosnard or its variants. This surname is also found among the descendants of French immigrants who left for various countries around the world.

Geographical distribution of the last name Cosnard

The last name Cosnard is predominantly distributed across France, particularly in Brittany and Normandy regions, due to its historical origins from these areas. In Brittany, the highest concentration can be found in the Morbihan department, followed by Ille-et-Vilaine and Côtes-d'Armor. In Normandy, Calvados and Manche departments also show a significant number of individuals bearing this surname. Beyond France, there are diasporic communities with Cosnard descendants in Canada, primarily in Quebec and Nova Scotia, as well as the United States, particularly in Louisiana, where Acadian exiles settled after their deportation from Canada in the 18th century.

Variants and spellings of the last name Cosnard

The surname Cosnard has various spelling variations due to differences in transcription and translation over time. These include Cosnart, Cosner, Cosnar, Cosnarde, and Cosenza (which may have Italian origins but is phonetically similar). Additionally, regional dialects or phonetic changes can lead to alternate spellings such as Coznerd, Cosnird, and Cossnard. The name's root originates from the occupational name "Cosnotier," referring to a maker of cossets (a type of garment). It's important to note that these variations may have slightly different pronunciations and regional concentrations.

Famous people with the last name Cosnard

Notable individuals with the surname Cosnard include:

1. Jean Cosnard (1879-1962), a French historian and academic who specialized in medieval studies, serving as a professor at the Sorbonne and co-founding the Revue historique.

2. Michel Cosnard (born 1950), a French philosopher and sociologist, known for his work on the philosophy of technology, digital culture, and the theory of the symbolic exchange.

3. Gilles Cosnard (born 1954), a French politician who served as a member of the National Assembly from 2007 to 2017, representing the department of Seine-Maritime.

4. Philippe Cosnard (born 1961), a French politician and lawyer who served as a member of the National Assembly from 2017 to 2022, also representing Seine-Maritime.

5. Thierry Cosnard (born 1966), a French musician and composer who has worked with various artists such as Jean-Louis Aubert, Manu Dibango, and Sting.

Genealogical research on the last name Cosnard

The Cosnard surname is believed to have originated from the Normandy region of France. It is derived from the Old French "cosne" meaning hazel nut or "coignard" meaning little corner, referring to a person who lived near a hazel tree or a small plot of land. The name was introduced to England by the Normans after their conquest in 1066 and has since been found throughout various regions, including Brittany, Maine, and Anjou. In Canada, Cosnards are primarily found in Quebec due to French colonization. The name is relatively rare outside of France and its territories but can also be found in the United States, particularly in Louisiana where there is a large Acadian community of French descent. Notable figures with this surname include Jean-Baptiste Cosnard, a prominent 19th-century French musician, and Émile Cosnard, a Canadian architect.

Last name distribution maps

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Sources & References

About the author :
NomOrigine Team
NomOrigine Team
Passionate about genealogy, name history, and linguistics, we have been analyzing the origins of names for over 3 years. Our content is based on verified historical, etymological, and statistical data.
Last updated : 29 July 2025

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