About the Couillard-Dupuis surname
The surname Couillard-Dupuis is associated with a patronymic formation. Couillard-Dupuis is a compound surname. Its form combines several family-name elements; depending on the line, this may reflect a dit name, the joining of two surnames, or a more recent civil-status development. A patronymic formation of this kind shows how an older personal name could develop into a family name. Couillard-Dupuis is a compound or hyphenated surname. For a particular family line, early records can show whether this form was long established or resulted from the joining of two surnames later in the family's history. In the normalization used for some LAFRANCE searches, the surname is also matched through the form “couillard dupuis”; this search variant can be useful when accents, spaces, or punctuation differ.
Pronunciation:
Kou-jar-du-pui/kujaʁdypyi/