Aurelius and Natalia (died 852) were Christian martyrs who were put to death during the reign of Abd ar-Rahman II, Caliph of Córdoba, and are counted among the Martyrs of Córdoba. Aurelius was the son of a Muslim father and a Christian mother. He was also secretly a follower of Christianity, as was his wife Natalia, who was also the child of a Muslim father. One of Aurelius's cousins, Felix, accepted Islam for a short time, but later converted back to Christianity and married a Christian woman, Liliosa. They are considered saints in the Roman Catholic Church, with a feast day of July 27.