Generations of Rogans and Duffys were ardent Catholics in Ireland, so it is not surprising that Hugh and Nancy maintained the practice of their faith and passed it along to their children. While frontier Tennessee was dominated by protestant denominations, the Rogan family was determined to practice their chosen religion even though few priests ventured into the area for several decades.
The Rogan stone cottage and later the brick house built by Francis were both used as meeting places for area Catholics. When itinerate priests did appear, it was in these two homes that mass was said for nearly 50 years. By the 1840s, a Catholic congregation was formalized in the Sumner County seat of Gallatin. Generations of the Rogan family were actively involved in the religious community and especially associated with St. John Vianney Catholic Church well into the twentieth century. Local cultural and religious historians credit the Rogan family with establishing the Catholic faith in Sumner County.