I think this is a formal wedding photo of my grandparents' big day. The folder in which it was kept bears the name of a well-established local photographer, whose grandson, a fine photographer and a man I know and respect, still runs a successful business in the same town. The inclusion of the priest at the left of the front row is another indication that this was taken at their wedding.
The photo is not in good condition, and will benefit from further work on it.