Archaeological remains from the church campus consisted of foundations, walkways, a brick drainage system, and trash middens. Some atifacts - nails and window glass - were related to the surviving buildings. Others, such fragments of dishes, jugs, jars, bottles, and animal bones, had been thrown away by the people who had lived and worked on the campus.
Investigations indicated that when the Catholic Church took over Thomas Howard’s plantation, it initially used the existing buildings for living quarters, dormitories, and worship. Howard’s log house served as quarters for the bishop. Shortly thereafter, the Church had a brick chapel built.
Later, a new rectory and seminary were constructed near the church. A separate complex of buildings - including schools, housing, and an orphanage - were built on another part of the property for the Sisters Charity of Nazareth.