All around the world, Adelardo (Adelardo 
, Adelardus) is quite a rare boy's given name. The first name Adelardo is characteristic of Philippines, where it is a rare male name, Spain, and Romania. Measured by absolute frequency, it is commonest in Philippines, Brazil, and Spain. Much less frequently, Adelardo is the last name as well as the forename.
| adelardo Carolingian prince (b. 836) |
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| adelardo cattaneo Catholic cardinal and bishop of Verona, IT (b. 1140) |
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adelardo lópez de ayala Spanish writer and politician (1828-1879), ES (b. 1828) |
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adelardo covarsí Spanish painter (1885-1951), ES (b. 1885) |
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adelardo novo brocas ES (b. 1880) |
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adelardo fernández arias ES (b. 1880) |
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| adelardo curros vázquez (b. 1873) |
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| adelardo parrilla candela (b. 1877) |
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adelardo Spanish footballer, ES (b. 1939) |
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| adelardo mora guarnido ES (b. 1888) |
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| adelardo duacastella rosell ES (b. 1911) |
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| adelardo de la calle puertas (b. 1920) |
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| adelardo méndez moya [occupation:dramaturgo] [dates:1965] [archive:Archivo Biográfico de España, Portugal e Iberoamérica], ES (b. 1965) |
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| adelardo ortiz de pinedo Spanish novelist, ES |
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| adelardo a d medeiros researcher (ORCID 0000-0001-8520-1888) |
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