Basilla of Rome was a Christian martyr who lived during the third century in Rome. According to tradition, she belonged to a noble Roman family and was the niece of Emperor Gallienus. After converting to Christianity and receiving baptism from Pope Cornelius, she refused to marry a pagan patrician named Pompeius. This refusal led to her being betrayed by her maid, resulting in her execution by beheading under the orders of Emperor Valerian in 257.