- Lord of Cadaval.
- Son of Álvaro Pérez de Castro and Maria Ponce de León.
- Married Leonor de Meneses, daughter of Dom João Telo, Count of Ourém. See: Humberto Baquero Moreno, A Batalha de Alfarrobeira: antecedentes e significado histórico (Coimbra: Universidade de Coimbra, 1979), p.17.
- Accompanied King João I of Portugal in the siege of Melgaço.
Pedro de Crasto