Isabel of Barcelos (October 1402 – 26 October 1466), also known as Isabel of Braganza, was a lady of the Portuguese nobility during the Late Middle Ages. She was the daughter of Afonso I, Duke of Braganza and Beatriz Pereira de Alvim, and she married Infante John, Lord of Reguengos de Monsaraz, her half-uncle, son of John I of Portugal.

Issue

Isabel and Infante John had four children:

Isabel died in the town of Arévalo on 26 October 1466 at the age of sixty-four. She was buried in the Batalha Monastery alongside her husband.

Ancestry

Ancestors of Isabel of Barcelos
8. Peter I of Portugal4. John I of Portugal9. Teresa Lourenço2. Afonso I, Duke of Braganza10. Pero Esteves, o Barbadão5. Inês Pires11. Maria Anes1. Isabel of Barcelos12. Álvaro Gonçalves Pereira6. Nuno Álvares Pereira13. Iria Gonçalves do Carvalhal3. Beatriz Pereira de Alvim14. João Pires de Alvim7. Leonor de Alvim15. Branca Pires Coelho
8. Peter I of Portugal
4. John I of Portugal
9. Teresa Lourenço
2. Afonso I, Duke of Braganza
10. Pero Esteves, o Barbadão
5. Inês Pires
11. Maria Anes
1. Isabel of Barcelos
12. Álvaro Gonçalves Pereira
6. Nuno Álvares Pereira
13. Iria Gonçalves do Carvalhal
3. Beatriz Pereira de Alvim
14. João Pires de Alvim
7. Leonor de Alvim
15. Branca Pires Coelho