Eulogius of Córdoba was a 9th-century priest and bishop-elect who lived in Córdoba during the rule of the Cordovan emirs. Born into a wealthy senatorial family, he received an extensive education and became a highly respected leader within the Christian community. He was known for his profound learning and his ability to encourage others during times of intense religious persecution. As a defender of the faith, he documented the lives of many martyrs and eventually faced execution himself for protecting a convert.