author
d. 1894
A 19th-century Canadian-born clergyman and writer, he is remembered for a religious biography and for his role as a French professor in Boston. His name also appears in the life story of educator Ellen M. Cyr Smith, who was his daughter.

by Jean-Philippe Boucher-Belleville, Narcisse Cyr
Narcisse Cyr was a Canadian-born clergyman and author who died in 1894. I could confirm that books were published under his name, including Memoir of the Rev. Cote, M.D., with a Memoir of Mrs. M. Y. Cote, and a History of the Grande Ligne Mission, Canada East.
A reliable biographical detail comes indirectly through his daughter, educator and author Ellen M. Cyr Smith: her Wikipedia entry identifies Narcisse Cyr as a clergyman and professor of French at Boston University. That suggests he was active in both religious and academic life, with ties to Canada and New England.
Clear, detailed biographical sources for his early life, ministry, and broader bibliography were limited in the material I could confirm here, so this overview stays close to the facts that could be checked.