Saint Saints Nereus and Achilleus, Martyrs

Nereus and Achilleus are two Roman martyr saints. In the present General Roman Calendar, revised in 1969, Nereus and Achilleus (together) are celebrated (optional memorial) on 12 May. The Tridentine calendar had on 12 May a joint feast (semidouble rank) of Nereus, Achilleus and Pancras. The name of Domitilla was added in 1595. The joint celebration of Nereus, Achilleus, Domitilla and Pancras continued with that ranking (see General Roman Calendar of 1954) until the revision of 1960, when it was reclassified as a third-class feast (see General Roman Calendar of 1960). The old Roman lists of the 5th century, which passed over into the Martyrologium Hieronymianum, contain the names of the two martyrs Nereus and Achilleus, whose grave was in the Catacomb of Domitilla on the Via Ardeatina. The notice in the more complete version given by the Berne Codex reads: "IIII id. Maii, Romae in coemeterio Praetextati natale Nerei et Achillei fratrum (On 12 May at Rome in the cemetery of Praetextatus [an evident error for Domitilla?] the natal day of the brothers Nereus and Achilleus"). In the invocation of the Mass for 2 October in the "Sacramentarium Gelasianum", the names of Nereus and Achilleus alone are mentioned. In the fourth and following centuries a special votive Mass was celebrated on 12 May at the grave of Nereus and Achilleus on the Via Ardeatina. The Itineraries of the graves of the Roman martyrs, written in the 7th century, are unanimous in their indication of the resting-place of these saints (Giovanni Battista de Rossi, "Roma sotterranea", I, 180–83). The basilica of Sts.