The museum's ecclesiastical collection includes a set of priestly vestments including a set of robes commissioned under the royal patronage of Marie Antoinette. They include an old Ecce Homo (12C) and a leaf of an ivory diptych (14C, Northern France). In addition there are a number of altar stones. Also of historical note is a statue of Jesus that was defaced by Cromwellian soldiers during the Siege of Drogheda in 1649.