The F.X. Fiola and Angelique Dumont referenced in your headstone survey belong to my great grandparents. Francois-Xavier Fiola was the son of Joseph Fiola and Agnes Brisson of Rimouski, PQ. He emigrated to the USA in 1900 or so and died in Fall River, MS.
The Napoleon Fiola 1895-1977 was the son of the two people referenced above and my paternal grandfather. He married Marie Louse (Petit dit) LaPre on or around 1915. They had 12 children most of whom moved to Southern California after WWII.