n. A person with a French surname but for whom English is their first language.

Example Citations:
At risk of disappearing from the Quebec triangle, whose sides intersect at Montreal, Quebec City and Lac St. Jean, dwells a separate and distinct people, the franglophones.
—F. X. Charet, “franglophones: Quebec‘s forgotten distinct people,“ The Gazette, December 12, 1997

But these young francophones, anglophones, franglophones, etc. who are speaking Chiac at school, Chiac with their friends (definitely Chiac with their friends) and, more often than not, Chiac at home — are they able to master both the “langue de Molière“ and the “langue d‘Acadieman,“ when there is clearly a preponderance of the latter?
—Marie Blythe, “To Chiac or not to Chiac?,“ The Telegraph-Journal, December 31, 2010

Earliest Citation:
The ending — in which the characters suddenly fall misty-eyed into each other‘s arms, ready to enter some nebulous franglophone workers paradise — is, as they say in Montreal, un vrai bummer.
—Fred Blazer, “Bilingual drama is universal,“ The Globe and Mail, February 10, 1979