Last name Siddell (Siddell 
) , throughout the world, is a rare family name. The surname Siddell is habitual in the United Kingdom, where it is a rare surname, Ireland, and New Zealand. In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, Siddell is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Siddell | Ireland, United Kingdom, Australia, United States, New Zealand |
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peter siddell New Zealand painter (1935-2011), NZ (b. 1935) |
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sylvia siddell New Zealand artist, NZ (b. 1941) |
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| kevin siddell New Zealand-born Australian pianist, composer, and public service official (1924-2004) (b. 1924) |
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| emily siddell New Zealand mixed media artist, NZ (b. 1971) |
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| thomas b. siddell Peerage person ID=432334 |
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| stuart g siddell researcher |
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| anne claire siddell Peerage person ID=432335 |
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