CHAIN IS NOT INCLUDED Available in Solid 10K &14K Yellow or White Gold, or Sterling Silver Size Reference: 17mm is the size of a US dime 19mm is the size of a US nickel 25mm is the size of a US quarter Saint Didacus of Alcal was a lay brother of the Order of Friars Minor who died at Alcal de Henares, Spain, November 12, 1463. Saint Didacus was canonized by Pope Sixtus V in 1588 and in the General Roman Calendar his feast day was celebrated on 13 November, since 12 November, the anniversary of his death, was occupied by that of Pope Saint Martin I. However, the Franciscans celebrated his feast day on 12 November, and Saint Didacus feast day was finally placed on 12 November for the whole of the Church in the 1969 revision of the General Roman Calendar, which also moved Pope Martin Is feast day to his dies natalis, 13 April. Saint Didacus is the saint to whom the Franciscan mission that developed into San Diego, California was dedicated.