From Saint-Clair-sur-Epte; bright or clear
Derived from the French place name Saint-Clair-sur-Epte, which honors Saint Clarus. The name ultimately stems from the Latin word 'clarus', meaning bright, clear, or famous. While historically a surname, this spelling variation adds a feminine flair to the traditional Sinclair.
About 8 girls were named Sinclaire in 2025.
US births per 5-year period, 1990–present (SSA data).
American middle-distance runner
