- (1351-1426) Bears the same name as his father, Juan Hurtado de Mendoza. He also has a son with the selfsame name and another called Pedro González de Mendoza.
- Lord Lieutenant to Juan I of Castile.
- Chief steward to King Enrique III of Castile. [João2, 150]
- Mentor (aio) and steward to Prince Juan, the future Juan II of Castile, during the period of regency. Remained his steward after the youn prince's coronation.
Joham Furtado de Memdoça