Rev. Alban Butler (171173). Volume X: October. The Lives of the Saints. 1866.
SS. Marcellus and Apuleius, Martyrs at Rome
FAMOUS in ancient Martyrologies, honoured with a mass in Pope Gelasiuss Sacramentary published by Cardinal Thomasius. The Emperor Lewis II., in 872, received their relics from the pope, which his wife Angilberga bestowed on the nunnery which she founded at Placentia in Italy, in which city these martyrs are honoured with singular devotion.