Thibeault
A French-Canadian surname that likely began as a patronymic or regional form of a French personal name such as Thibault.
The #9,511 most common surname in the United States (2010 Census) — about 1 in every 90,356 Americans shares it.
Etymology
Thibeault is a French surname closely related to Thibault and Thibaut, names that ultimately come from the old Germanic personal name Theobald. That name is generally understood to mean something like “brave people” or “bold among the people,” from elements meaning “people” and “bold, brave.” The spelling with -eault reflects French orthographic variation, especially in North American usage.
History
The surname is especially associated with French-speaking families in Canada and French-descended communities in North America. Like many French surnames, it likely began as a hereditary form of a given name and then spread through family lines rather than from a place name or occupation. The many spellings reflect long-standing variation in how the name was written in France and later in Quebec and the United States.
Origin
Regions
Variant spellings
Fun fact
Thibeault belongs to a broad family of surnames ultimately tied to the medieval name Theobald, which produced many different spellings across French-speaking regions.