Old Norse name
Originally, it was probably the name given to the juice which was gained from berries and then fermented 
When the Æsir and the Vanir made their peace after the war, they sealed the peace declaration by spitting into a bowl and then out of this spittle creating Kvasir who was the wisest of all creatures. The dwarfs Fjalarr and Galarr murdered him and caught his blood in three vessels Boðn, Són and Óðrœrir. They mixed the blood with honey and from this came the mead, which makes a poet of anyone who drinks it. This is why the mead is also called Kvasis dreyra = 'Kvasir's blood' 
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|&: count of both main and additional first names|
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for names given to less than 3 or 5 persons per country.
No recent statistics trend found in databases for Kvasir.