Cognomen Sillery (Sillery 
) , all around the world, is a rare surname. The surname Sillery is characteristic of Ireland, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Canada. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
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| Sillery | Canada, Australia, United States, United Kingdom, Ireland |
| charles sillery poet (b. 1807) |
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| anthony sillery (b. 1903) |
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| kathleen sillery (died 1944) |
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| henry sillery Peerage person ID=140324 |
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| john william sillery Peerage person ID=457105 |
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| iris eldina sillery Peerage person ID=457106 |
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