Saint Cecilia was not canonized. She was proclaimed a saint by early Christian's because of her martyrdom. The canonization process did not come into existence till the 12th century. In the primitive church, marty's were immediately recognised as witnessing to the perfection of christian life on earth, having shown the ultimute proof of their life for Christ by the offering of their lives. By the sacrifice of their lives for Christ, they attained heaven in eternal glory and were indissolubly united to the lord, the head of the mystical body. There was now body who canonized Cecilia because Cecilia was never canonized.