- (1261-1325) Son of Alfonso III of Portugal and Beatriz of Castile. Grandson of Alfonso X, 'the Wise', of Castile. Reigned from 1279.
- Married to Isabel of Aragon.
- Counted among the Portuguese medieval poets of the Cancioneiros.
- Signed a treaty with Fernando IV of Castile in Ágreda (1304)
Denis
Diniz