Oval theca housing ex ossibus (of the bone) first class relic of Saint Bonaventure. The relic is affixed to a background of red silk and surrounded by paperolle and twisted wire ornamentation. The theca is secured on the back by a seal of red Spanish wax with the imprint of the coat of arms of a Catholic Bishop.
Saint Bonaventure († 1274), was an Italian medieval Franciscan, scholastic theologian and philosopher. The seventh Minister General of the Order of Friars Minor, he was also a Cardinal Bishop of Albano. He was canonized in 1482 by Pope Sixtus IV and declared a Doctor of the Church in 1588 by Pope Sixtus V. He is known as the "Seraphic Doctor". He is ranked along with Thomas Aquinas as the greatest of the Doctors of the Church and was regarded as one of the greatest philosophers of the Middle Ages.