Vaillancourt
A French surname meaning, roughly, “valiant court” or “brave courtier,” though the exact origin is not fully certain.
The #8,834 most common surname in the United States (2010 Census) — about 1 in every 83,242 Americans shares it.
Etymology
This is a French surname, and the most common explanation treats it as made from French elements related to valour or bravery plus court, likely in the sense of a courtly place or a noble household. Because the name is not clearly documented in the excerpted source as a dictionary entry, the precise historical formation remains uncertain. It may have begun as a descriptive or locational byname in French-speaking areas before becoming hereditary.
History
Vaillancourt is found as a French-Canadian surname and is especially associated with francophone North America. The name also appears in other French surname traditions, which is consistent with broader patterns of French family-name formation. The single excerpt provided only shows the name in a list of French surnames, so it offers no independent etymological detail.
Origin
Regions
Variant spellings
Fun fact
Because the spelling is strongly French, the surname is often recognized immediately as francophone even where it has been anglicized in pronunciation or recordkeeping.
From the historical record
“toinette, Corday, Carnot, Necker, Dumoulin, Danton, Marat, Barrere, Pichegru, Hoche, Moreau, De Lisle, Seyes (Sieyes), Vaillancourt, Barras, Napoleon, Bonaparte, Napoleon Bon- aparte, Josephine, Tascher, Eugene Beauharnais, Hortance (Hortense), Borghese, D'Abrantes, Ney, Murat, Le Febvre, Massena, Souchet, Duroc…”
— A Grammar of American Surnames