Last name Lacaille (Lacaille 
, 拉凯, لكيل) , throughout the world, is quite a rare family name. The last name Lacaille is habitual in Reunion, where it is quite a common surname, France, where it is quite a rare surname, and Trinidad and Tobago. Measured by absolute frequency, it is the most numerous in France, Canada, and the United States. Very seldom, Lacaille is the forename as well as the last name.
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| Lacaille | France, Canada, United States, Belgium, Reunion |
| edmond lacaille FR (b. 1835) |
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| félix lacaille French painter (1856-1923), FR (b. 1856) |
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| henri lacaille French archivist and historian, FR (b. 1862) |
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| henri lacaille French general officer, FR (b. 1895) |
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rené lacaille Réunionnaise musician, FR (b. 1946) |
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jean-louis lacaille French figure skater, FR (b. 1984) |
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| isabelle lacaille French politician, FR (b. 1956) |
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| andré lacaille French politician, FR (b. 1957) |
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| philippe lacaille French politician, FR (b. 1959) |
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| nicolas lacaille FR (b. 1952) |
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| jérôme lacaille French banker (b. 1967) |
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| raphaël lacaille French politician, FR (b. 1978) |
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| louis lacaille Peerage person ID=549040 |
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| xavier lacaille French actor, FR |
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| kevin lacaille researcher |
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