Family name Llacuna (Llacuna 
) , worldwide, is quite a rare cognomen. The last name Llacuna is characteristic of Philippines, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Spain. Not in comparison with a country's population, it most frequently occurs in Philippines, the United States, and Spain. Very seldom, Llacuna is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Llacuna | Spain, Saudi Arabia, United States, Philippines, United Arab Emirates |
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miquel llacuna alemany Spanish draftsman (1915-1967), ES (b. 1915) |
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| joan llacuna i carbonell Spanish poet (1905-1974), ES (b. 1905) |
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| amèlia trueta i llacuna Spanish historian, ES (b. 1924) |
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| teresa llacuna Spanish pianist (b. 1935), ES (b. 1935) |
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| trinitat llacuna i estrany ES |
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| núria llacuna |
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| joan llacuna i creixell |
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