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
Patron saint city's patron saint – such a practice conferred considerable prestige on the city concerned. In Latin America and the Philippines, Spanish and Portuguese explorers often named a location for the saint on whose feast or commemoration they first visited the place, with that saint naturally becoming the area's patron. Professions sometimes have a patron saint owing to that individual being involved somewhat with it, although some of the connections were tenuous. Lacking such a saint, an occupation would have a patron whose acts or miracles in some way recall the profession. For example, when the previously unknown profession of photography