Last name Dease (迪斯 
, Dease 
) , around the world, is quite a rare cognomen. The cognomen Dease is habitual in Ireland, where it is a rare surname, the United States, and New Zealand. In absolute terms, it most frequently occurs in the United States, China, and Ethiopia. Likewise, Dease is the forename as well as the last name.
| VARIANT | COUNTRY |
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| 迪斯 | China |
| Dease | Canada, Ethiopia, United States, South Africa, Ireland |
| thomas dease Irish bishop (b. 1568) |
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| richard dease (1603-1650) (b. 1603) |
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| william dease Irish surgeon (b. 1750) |
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| richard dease (b. 1775) |
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| peter warren dease Canadian explorer, CA (b. 1788) |
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| gerald dease (1790-1854) (b. 1790) |
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| matthew dease 1819 - 1887 (Mr) (b. 1819) |
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| teresa ellen dease Founder of the Loreto Sisters (1820-1889), IE (b. 1820) |
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| james arthur dease (1826-1874) (b. 1826) |
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| william dease Politician in Manitoba (1827–1913), CA (b. 1827) |
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| edmund dease Dease, Edmund Gerald (1829–1904), landowner and politician (b. 1829) |
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| gerald dease British chamberlain (b. 1831) |
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maurice dease recipient of the Victoria Cross, IE (b. 1889) |
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| gerald dease (1854-1934) (b. 1854) |
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| edmund fitzlaurence dease (1856-1934) (b. 1856) |
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