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Juan de Fuca

explorer for Spain from Kefalonia, Ionian Islands

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 27, 2026
Entity authorityQ504735 ↗
Source-derived summary

Juan de Fuca (10 June 1536 – 23 July 1602) was a Greek sailor and explorer under the patronage of Philip II of Spain. He is best known for his claim to have explored the Strait of Anián—now known as the Strait of Juan de Fuca—between Vancouver Island (now part of British Columbia, Canada) and the Olympic Peninsula (now part of northwestern Washington state in the United States).

Name

"Juan de Fuca" is a hispanicization of the Greek name Ioannis Fokas or Phokas (Ἰωάννης Φωκᾶς), latinized as Johannes Phocas. However, his exact name is somewhat uncertain. Some sources state that his actual name was Apostolos Valerianos (Ἀπόστολος Βαλεριάνος). It is possible that he was baptized as Apostolos and later adopted the name Ioannis or Juan because Apóstol is not a common Spanish name. It is known that his father and grandfather bore the name Focas, so it seems likely that Valerianos was a nickname or epithet borrowed from the village where he grew up on Cephalonia.

Family and early life

De Fuca's grandfather Emmanouil Fokas (Ἐμμανουὴλ Φωκᾶς) fled Constantinople when it fell to Ottoman forces in 1453, accompanied by his brother Andronikos (Ἀνδρόνικος). The two settled first in the Peloponnese, where Andronikos remained, but in 1470 Emmanouil moved to the island of Cephalonia. Ioannis's father Iakovos (Ἰάκωβος) established himself in the village of Valerianos on the island and came to be known as "the Valeriano Fokas" (Φωκᾶς ὁ Βαλεριάνος, Fokas ho Valerianos) to distinguish him from his brothers.

Editorial summary

Begin with the source’s own compact description: “Juan de Fuca” is explorer for Spain from Kefalonia, Ionian Islands. The dossier treats that line as a proposition to test through Juan, Fuca and explorer, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1536, 1602, 1453, 1470—that can be checked directly. The linked authority record independently contributes the date 1536-01-01. For this dossier, Juan, Fuca and explorer is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “explorer for Spain from Kefalonia, Ionian Islands” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q504735. VIAF identifies the subject as 13943691. The Library of Congress control number is n91017404. 3 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1536, 1602, 1453 and 1470.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “Juan de Fuca” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.