Guillou Coat of Arms Record & History

A record of documented arms, meaning and origin, researched for the Guillou family of France.

Reg. 7300 · French, G–I

Coat of Arms & Family Crest Details

Where the Guillou Arms Were Recorded

Bretagne
Map of France showing where the Guillou arms are recorded

The Guillou arms were recorded in Bretagne, c. 1663.

More families held coats of arms in Bretagne than anywhere else in France. The land was divided into many small estates rather than a few large ones, so far more households counted as gentry, and each needed a shield of its own to be told apart.

This is where the arms were entered in the register. Families often moved to other parts of the country, so the same name can turn up in more than one region.

Region
Bretagne
First recorded
1663

Granting Authority for the Guillou Arms

Arms of Juge d'armes de France
Juge d'armes de France
Authority

Juge d'armes de France

1407-1789

The body that granted and recorded arms in France in this period.

Portrait of Louis XIV of France
Louis XIV of France
Sovereign of the period

Louis XIV of France

1643–1715

Reigning in France when the Guillou arms are first recorded.

How Arms Worked in France

In France, a coat of arms was a mark of honor that passed down through the male line to all legitimate descendants. Families often used the same shield without changes to show their shared heritage. If a branch wanted to stand out, they could add a small mark to their shield to show their specific place in the family tree.

Granting authority
The Juge d'armes de France acted as the official authority that regulated and verified coats of arms across the country.
How they got arms
Families typically inherited their arms from ancestors, though they could also receive them through royal grants or by proving their noble status.
Where arms were recorded
Coats of arms were officially recorded in the Armorial Général de France, which began its main collection in the year 1696.
The family's standing
Recorded among the armigerous families of Bretagne.

Origin & History of the Guillou Family in France

The surname Guillou is a classic example of a patronymic name rooted in the linguistic traditions of Brittany. It originated as a diminutive form of the name Guillaume, which is the French equivalent of William. In the Breton language, the suffix "ou" was frequently added to names to signify a smaller version or a term of endearment, effectively meaning "little William" or "son of William." By the time records confirm the presence of the family in Brittany in 1663, the name had already become well-established among the local population. Families bearing this name were typically integrated into the rural and maritime communities of the region, where they often worked as farmers or tradespeople. Because Brittany maintained a distinct cultural and linguistic identity separate from the rest of France for many centuries, the name Guillou served as a strong marker of regional heritage and ancestral ties to the western peninsula.

Related Branches & Arms

Root word
Guillaume

Derived from the Germanic elements for will and helmet or protection.

This name
GuillouA diminutive form of William, signifying a resolute protector or determined guardian.
also spelled
Guilloudelalarday
Geeyoo de la Larday
Guillou
Lalardais

Documented Sources

J. B. Rietstap, Armorial Général, Gouda: G. B. van Goor Zonen, 1884–87

Deshayes, Albert. Dictionnaire des noms de famille bretons. 1995

Tanguy, Bernard. Les noms de lieux bretons. 1992

Archives Départementales du Finistère. Série E, État civil et registres paroissiaux

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