About the Dupuis-Dupuy surname
The surname Dupuis-Dupuy is associated with a patronymic formation. Dupuis-Dupuy 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. The name therefore belongs to a tradition in which an ancestor's given name gradually became a hereditary surname. Dupuis-Dupuy 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.
Pronunciation:
Du-pui-du-pui/dypyidypyi/