Coat of arms of Portugal I became a dragon, probably associated to the adoption of Saint George as the patron saint of Portugal. Until the 17th century, the dragon was represented in "or", but since then, it started to be represented in "vert". This change of color was probably due to the ascension to the throne, in 1640, of the House of Braganza, which had the green as its livery color, this also becoming the national color of Portugal. During the period of the House of Braganza, two dragons "vert" became frequently used as the supporters of the Portuguese Royal shield. Other of the external
Saint Domnius became the city's patron saint, and the city's cathedral (the Cathedral of Saint Domnius) was built in the mausoleum of Diocletian itself, the emperor who martyred him. The Basilica of St. John Lateran in Rome claims to own some of Domnio's relics, since Pope John IV, in the 7th century, had requested that relics of a martyr named Domnio be brought to Rome. Saint Domnius Saint Domnius (also known as Saint Dujam or Saint Duje, Saint Domnio, Saint Doimus, or Saint Domninus) was a 3rd-century Bishop of Salona and patron of the city of Split. Salona was a large Roman