Religionist n. One earnestly devoted or attached to a religion; a religious zealot. "The chief actors on one side were, and were to be, the Puritan religionists.""It might be that an Antinomian, a Quaker, or other heterodox religionists, was to be scourged out of the town."
... among these French lads the talk was sober and quiet. Scarce a week passed but some fugitive, going through Canterbury, brought the latest news of the situation in France, and the sufferings of their co-religionist friends and relations there; and the political events were the chief topics ... — Saint Bartholomew's Eve - A Tale of the Huguenot WarS • G. A. Henty