About the Demers-Dumay surname
The surname Demers-Dumay is associated with a patronymic formation. Demers-Dumay 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. Demers-Dumay 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 “demers dumay”; this search variant can be useful when accents, spaces, or punctuation differ.
Pronunciation:
De-mé-du-mè/dəmedymɛ/