Across the world, Isidoor (Isidoor 
) is a very rare masculine forename. The forename Isidoor is characteristic of Western Europe, particularly Belgium, where it is a rare masculine name. Much less frequently, Isidoor is the last name as well as the forename.
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| Isidoor | Netherlands, Belgium, United States, Germany, Spain |
| isidoor sebastiaan van doosselaere (b. 1816) |
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isidoor de loor Passionist lay brother, beatified, BE (b. 1881) |
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| isidoor langerock BE (b. 1828) |
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| isidoor de vos Belgian composer (1850-1876), BE (b. 1850) |
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| isidoor teirlinck Belgian writer, BE (b. 1851) |
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| isidoor bauwens Belgian physician, writer and politician (1855-1918), BE (b. 1855) |
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| isidoor de greve Belgian politician (1878-1965), BE (b. 1878) |
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| isidoor mechant Belgian bicycle racer, BE (b. 1885) |
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| isidoor mast BE (b. 1882) |
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| isidoor boerewaard Belgian artist, BE (b. 1893) |
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| isidoor van pamel BE (b. 1885) |
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| isidoor trappeniers Belgian politician (1902-1971), BE (b. 1902) |
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| isidoor lambrecht BE (b. 1896) |
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| isidoor hintjens BE (b. 1900) |
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| isidoor berkelouw (1913-1987) book-dealer (b. 1913) |
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Smets, Bornstein, Wackenier, Wayenbergh, Wasteels, Verhulst, Larrangé, Goethals, Depourcq, Speelman, Verwaijen, Viskens, Hehanussa, Hermans, Verhaegen, Jespers, D'Hooge, Roebers, Battjes, Callens, Maljers, Mathijs, Lulofs, Loyens, Smeets, Stuifbergen, Thijs, Pinas, Sluys, Lampaert, and Van Den Berghe