About Diogo de Castro
Lived 1562 – 1639 (aged 76–77). Diogo de Castro was a civil servant.
Diogo de Castro (Évora, 1562-Évora, 1639) was a Portuguese nobleman and politician, who served as viceroy of Portugal between 1633 and 1634. Son of Fernando de Castro, I Count of Basto, Diogo inherited this title from his father.
He began his military career at the Battle of Alcácer Quibir, where he was captured by the Arabs, but he was subsequently released by the intervention of the King of Spain, Philip II, whom Castro began to support in the War of the Portuguese Succession. Castro participated in the Conquest of the Azores, which meant Philip's victory in the war.
After failing in a mediation attempt during the Manuelinho Revolt, Castro died in his hometown as he prepared to travel to Madrid to discuss the future of Portugal. Soon after, the Portuguese Restoration War broke out.
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Important facts
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Contemporaries
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Frequently asked questions
Who was Diogo de Castro?
Portuguese politician and nobleman
When was Diogo de Castro born?
Diogo de Castro was born in 1562.
When did Diogo de Castro die?
Diogo de Castro died in 1639 in Évora.
What was Diogo de Castro's occupation?
Diogo de Castro was a civil servant.
What nationality was Diogo de Castro?
Diogo de Castro's recorded nationality: Kingdom of Portugal.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Diogo de Castro. https://biography.guide/diogo-de-castro/
MLA: "Diogo de Castro." Biography.guide, https://biography.guide/diogo-de-castro/.
Chicago: "Diogo de Castro." Biography.guide. https://biography.guide/diogo-de-castro/.
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