Cognomen Blais (Blais 
, بليس 
, Бле) , globally, is a common last name. The family name Blais is habitual in Canada, where it is quite a common surname, New Zealand, where it is quite a rare surname, and Israel. Measured by absolute frequency, the name is most common in Canada, the United States, and France. Much less frequently, Blais is the forename as well as the last name.
| pierre blais CA (b. 1640) |
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| michel blais Canadian militia leader (b. 1711) |
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| jean-baptiste blais 16 Oct 1718 - (b. 1718) |
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| jean-baptiste blais (1743-1832) (b. 1743) |
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| louis blais Canadian politician (1755-1838), CA (b. 1755) |
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narcisse blais Canadian politician, CA (b. 1812) |
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andré-albert blais Canadian Catholic prelate (1842-1919), CA (b. 1842) |
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françois blais Canadian politician (1875-1949), CA (b. 1875) |
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aristide blais Canadian politician (1875-1964), CA (b. 1875) |
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| louis-henri blais Canadian politician, CA (b. 1827) |
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giulio blais IT (b. 1869) |
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roger blais Canadian actor (1917-2012), CA (b. 1917) |
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| eugenio blais IT (b. 1860) |
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giorgio blais Italian General, IT (b. 1935) |
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marie-claire blais Canadian writer, CA (b. 1939) |
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