Family name Çubillaga (Çubillaga 
) , globally, is an extremely rare surname. The surname Çubillaga is characteristic of Southern Europe, particularly Spain, where it is a very rare surname.
| joanes çubillaga sasin barrena 1589-06-25, ES (b. 1589) |
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| ursola çubillaga ygueravide 1632-10-22, ES (b. 1632) |
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| juan çubillaga yguerabide 1640-04-22, ES (b. 1640) |
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| antonio çubillaga arbizu 1643-08-02, ES (b. 1643) |
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| joseph çubillaga yguerabide 1645-03-29, ES (b. 1645) |
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