Hidalgo

Spanish: from hidalgo ‘nobleman’ (attested in this form since the 12th century), a contraction of the phrase hijo de algo ‘son of something’. The expression hijo de (Latin filius ‘son’ + de ‘of’) is used to indicate the abundant possession of a quality, probably influenced by similar Arabic phrases with ibn; algo (Latin aliquid ‘something’) is used in an elliptical manner to refer to riches or importance. As in the case of other surnames denoting high rank, the name does not normally refer to the nobleman himself, but is usually an occupational name for his servant or a nickname for someone who gave himself airs and graces.