Proculus and Nicea were two Christian martyrs. According to Jean Bolland and Camillo Tutini, they were martyred in 249 during the Decian persecutions; Proculus was a deacon (with the same name as the city's patron saint) and Nicea was his mother. According to tradition they are buried in Pozzuoli Cathedral, where they are venerated. They were painted in 1637 by Artemisia Gentileschi.