Last name Graaff (Graaff 
, جراف, غراف 
) , across the world, is quite a common cognomen. The family name Graaff is characteristic of Netherlands, where it is quite a common surname, South Africa, where it is quite a rare surname, and Switzerland, where it is a rare surname. In absolute terms, it most frequently occurs in Netherlands, South Africa, and Germany.
| johan michaël de graaff Dutch politician, NL (b. 1731) |
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| n. de graaff (b. 1765) |
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| d. de graaff (b. 1773) |
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| johannes jacobus graaff (1790-1822) (b. 1790) |
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| h.j. van de graaff (b. 1782) |
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| barend willem van der graaff Dutch painter (1798-1886), NL (b. 1798) |
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david graaff South African businessman and politician (1859-1931), ZA (b. 1859) |
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jacobus arnoldus graaff South African politician, ZA (b. 1863) |
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| johannes jacobus graaff (born 1816) (b. 1816) |
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| c.n. de graaff (b. 1810) |
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| petrus novbertus graaff (1823-1875) (b. 1823) |
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| martinus hendrik de graaff (b. 1813) |
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| frederik carel de graaff NL (b. 1819) |
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william t. van de graaff American football player and coach, college athletics administrator (1895-1977), US (b. 1895) |
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| johanna catharina elizabeth graaff (1851-1930) (b. 1851) |
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