- (?-1374) Galician lady. Daughter of Pedro Fernández de Castro and Isabel Ponce de León.
- Half-sister of Inês de Castro, the immortalized lover of King Pedro I of Portugal.
- Second wife of Pedro I of Castile (1354) by whom she had a son, Juan of Castile y Castro (1355-1405).
- Widow of Diego Fernández de Haro, her first husband.
Johana de Castro
Johanna