About the Gagnon surname
The surname Gagnon has an onomastic interpretation that still needs to be placed in the history of each family line. The etymology of Gagnon is old and debated; it is generally connected with medieval French forms. The general meaning of the surname should be distinguished from the history of each family that bears it. The etymological interpretation should be compared with the earliest spellings and places associated with each family line.
Pronunciation:
Ga-gnon/ɡaɲɔ̃/