Last name Siscar (Siscar 
) , globally, is quite a rare surname. The last name Siscar is habitual in Philippines, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Spain. Measured by absolute frequency, the name is most common in Philippines, Spain, and Brazil. Very seldom, Siscar is the forename as well as the last name.
| gregorio mayansy siscar (b. 1697) |
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| francesc siscar i siscar ES (b. 1760) |
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joaquín manuel de moner y de siscar Spanish writer (1822-1907), ES (b. 1822) |
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| ferran de sagarra i de siscar Spanish jurist, politician and lawyer (1853-1939), ES (b. 1853) |
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| cristina siscar AR (b. 1947) |
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| marcos siscar Brazilian philologist, BR (b. 1964) |
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| raimundo siscar Roman Catholic bishop |
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| jose carmelo ortola siscar Spanish politician, ES |
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| guillermo siscar Roman Catholic bishop |
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| javier de montoliu siscar Ph.D. Universitat Politècnica de Catalunya 1977 |
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| guillem de siscar |
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| antoni agustí y siscar ES |
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