Congregación Mariana
Cullen was founder and director of the Sodality of Our Lady at the college, which duties included counseling students. In 1896, James Joyce was elected Student Prefect of the Society. Although not officially an instructor, he impressed on them that "the Old Testament Hebrews were the spiritual fathers of Christianity". According to Neil R. Davison, the sermons in Chapter III of "A Portrait of the Artist as a Young Man" are modeled on those given by Cullen during a retreat held in 1897.