Cognomen Teasdale (Teasdale 
) , across the world, is quite a common surname. The surname Teasdale is characteristic of the United Kingdom, where it is quite a rare surname, Australia, and New Zealand. In absolute terms, it most frequently occurs in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
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| Teasdale | United Kingdom, Canada, Australia, South Africa, United States |
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washington teasdale British engineer and photographer (b. 1830) |
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george teasdale British Mormon leader (1831-1907), US (b. 1831) |
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| nancy teasdale (born 1786) (b. 1786) |
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sara teasdale American writer and poet (1884-1933), US (b. 1884) |
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verree teasdale American stage actor, US (b. 1903) |
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| howard teasdale American politician (1855-1936), US (b. 1855) |
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| william b. teasdale American politician and judge (1856–1907) (b. 1856) |
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| john teasdale (b. 1848) |
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| annie booth teasdale (1864-1951) (b. 1864) |
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| matilda e. p. teasdale (b. 1858) |
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| percy morton teasdale British painter, GB (b. 1870) |
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lucille teasdale Canadian medical doctor and surgeon who worked in Uganda (1929-1996), CA (b. 1929) |
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| john teasdale Australian farmer, AU (b. 1881) |
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joseph p. teasdale American politician (1936-2014), US (b. 1936) |
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| william teasdale (born 1889) (b. 1889) |
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