St. Pelagius of Córdoba was a Christian martyr who lived during the 9th century in Al-Andalus, a region under Muslim rule. He is known for his steadfast faith and refusal to convert to Islam, which led to his execution. His story is often associated with the struggle of Christians in a predominantly Muslim society. Pelagius is venerated as a saint in the Roman Catholic Church and is celebrated for his courage and commitment to his beliefs. His feast day is observed on March 26. He is also recognized as one of the Martyrs of Córdoba, a group of Christians who suffered persecution during this period.