Álvaro Pires de Castro
The Count of Arraiolos | |
|---|---|
Coat of arms of Álvaro Pires de Castro | |
| Constable of Portugal | |
| In office 1382–1384 | |
| Monarch | Ferdinand I of Portugal |
| Preceded by | position established |
| Succeeded by | Nuno Álvares Pereira |
| Personal details | |
| Born | c. 1310 |
| Died | 11 June 1384 (aged 73–74) Lisbon, Portugal |
| Nationality | Portuguese |
Álvaro Pires de Castro (c. 1310 – 11 June 1384 in Lisbon) was a powerful Galician-Portuguese nobleman, stem of the Portuguese branch of the House of Castro. He was the first Count of Viana (da Foz do Lima), the first Count of Arraiolos and the first Constable of Portugal.