The Noronha family name traces its origins to Portugal. It is found mainly in areas such as Brazil, India, Mozambique, Angola and Macau that were colonized by the Portuguese. In India the name is unique to the Christians hailing from Goa, Mangalore and Bombay. In Brazil, it is less common but more associated with nobility, such as the family that gave the name to the island Fernando de Noronha. According to the official records, the Noronha family coat of arms consists of castles, arranged one above the other, within a standard crest.
Ref: http://noronhas.com/