Family name Gauslaa (Gauslaa 
) , worldwide, is a rare surname. The surname Gauslaa is habitual in Northern Europe, particularly Norway, where it is quite a rare surname, Estonia, where it is a rare surname, and Sweden. In absolute terms, this name is the most popular in Norway, Sweden, and Australia. Very seldom, Gauslaa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gauslaa | Norway, Sweden, United Kingdom, Estonia, Australia |
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noan christian gauslaa Norwegian politician (1864-1952) (b. 1864) |
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olav gauslaa Norwegian politician (1881-1966), NO (b. 1881) |
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arne gauslaa Norwegian journalist and resistance member, NO (b. 1913) |
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| gudny gauslaa Norwegian missionary (b. 1901) |
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| einar gauslaa Norwegian newspaper editor (b. 1915) |
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| jon gauslaa Norwegian jurist (b. 1962) |
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