Spaniard

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Middle English: shortening of Old French Espaignart, from Espaigne ‘Spain’.

wiktionary

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From Middle English Spaignarde, from Old French Espaignard, from Espaigne.

etymonline

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Spaniard (n.)

c. 1400, from Old French Espaignart, from Espaigne "Spain," from Latin Hispania, from Greek Hispania "Spain," Hispanos "Spanish, a Spaniard," probably from Celt-Iberian, in which language (H)i- represents a definite article [Klein, who compares Hellenistic Greek Spania]. The earlier English noun was Spaynol (mid-14c.), from Old French Espaignol. The Latin adjectives are Hispanus, Hispanicus, Hispaniensis.