Apollonia a martyr of Alexandria, suffered with Metra, Quinta, and Serapion, in the year 249, when she was seized, and some one by a violent blow on the face knocked out many of her teeth; whence, in the Middle Ages, she was held to be the patroness against the toothache. Soon she was brought before the burning pile, and, on being asked to recant, reflected a moment, and then leaped into the fire. She is commemorated in the Roman Church on Feb. 9. Eusebius, Ch. Hist. 6, 41; Landon, Eccl. Dict. 1, 450.