Duarte, Duke of Guimarães (7 October 1515 – 20 September 1540) was a Portuguese infante (prince); the sixth son of King Manuel I of Portugal and his wife Maria of Aragon.

[1] He was tutored by André de Resende, who later wrote his biography.

After the marriage, Infante Duarte became the 4th Duke of Guimarães.

This marriage produced three children:[1] He is buried in the Monastery of Jerónimos in Lisbon.

This biography of a member of the Portuguese royal family is a stub.