Family name Grønningsæter (Grønningsæter 
) , across the world, is a very rare last name. The last name Grønningsæter is habitual in Northern Europe, particularly Norway, where it is quite a rare surname.
| arne ivarsson grønningsæter NO (b. 1781) |
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| elias arnesson grønningsæter Norwegian politician (b. 1811) |
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anton grønningsæter Norwegian chemist, NO (b. 1880) |
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arne backer grønningsæter (b. 1951) |
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| børre i. grønningsæter Norwegian botanist (1916-1975) (b. 1916) |
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| fredrik grønningsæter Bishop of the Church of Norway, NO (b. 1923) |
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