Family name Scaddan (Scaddan 
) , in the world, is a rare last name. The surname Scaddan is characteristic of Australia, where it is a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in Australia, the United Kingdom, and Canada.
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| Scaddan | United Kingdom, Australia, United States, Canada, New Zealand |
| richard scaddan painter and engraver, GB (b. 1719) |
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| robert scaddan British draftsman, active 18th century (b. 1720) |
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john scaddan Australian politician; 10th Premier of Western Australia, AU (b. 1876) |
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joe scaddan Australian rules footballer, AU (b. 1886) |
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| albert scaddan Australian rules footballer (1887-1967), AU (b. 1887) |
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| simon scaddan British diplomat (-1944). Deputy High Commissioner, Calcutta, India 1996-2000, High Commissioner to Papua New Guinea 2000-2003 (b. 1944) |
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