About the Moreau-Duplessis surname
The surname Moreau-Duplessis is associated with a patronymic formation. Moreau-Duplessis 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. Moreau-Duplessis 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 “moreau duplessis”; this search variant can be useful when accents, spaces, or punctuation differ.
Pronunciation:
Mo-ro-du-plè-si/mɔʁodyplɛsi/