<P> Duarte is an alternative Portuguese and Spanish form of the name Edward (another version is Eduardo). It is also could refer to a number of people: </P> <Ul> <Li> Edward of Portugal (Portuguese Duarte I), King of Portugal, 1433--1438 </Li> <Li> Duarte Nuno, Duke of Braganza (1907--1976), former claimant to the Portuguese throne </Li> <Li> Duarte Pio, Duke of Braganza (born 1945), current claimant to the Portuguese throne (Duarte Nuno eldest son) </Li> <Li> Duarte I, 4th Duke of Guimarães (1515--1540), Infante of Portugal </Li> <Li> Duarte II, 5th Duke of Guimarães (1541--1576), Infante of Portugal </Li> <Li> Infante Duarte of Braganza (1605--1649), Lord of Vila do Conde, King John IV younger brother </Li> </Ul>

Where does the last name duarte originate from
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