| May 9th 1833 | | Boleslaw Dembinski, composer
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| May 9th 1837 | | Adam Opel, German manufacturer (cycling, motorcars)
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| May 9th 1843 | | Belle Boyd, spy (Confederate)/actress/lecturer
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| May 9th 1844 | | [Maria] Catharina Beersmans, Belgian actress (Bad Herders)
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| May 9th 1846 | | Nikolay Feopemptovich Solov'yov, composer
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| May 9th 1855 | | Julius Rontgen, composer
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| May 9th 1860 | | James Matthew Barrie, Scotland, novelist (Margaret Ogilvy, Peter Pan)
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| May 9th 1865 | | August de Boeck, composer
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| May 9th 1873 | | Howard Carter, British archaeologist (found King Tutankhamen's tomb)
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| May 9th 1873 | | Lilian Mary Baylis, manager (Old Vic & Sadler's Wells Theater)
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| May 9th 1882 | | Henry J Kaiser, builder (Liberty Ships, Jeeps, Boulder Dam)
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| May 9th 1887 | | Jules Van de Leene, Belgian writer
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| May 9th 1892 | | Eric Westberg, composer
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| May 9th 1892 | | Zita, empress (Austria)/Queen (Hungary)
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| May 9th 1895 | | Lucian Blaga, Romaniams philosopher/poet (Dogmatic Aeon)
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