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First name origin & meaning:

German: Eagle and powerful

First name variations: Arnaud, Arnault, Arnie, Arnald, Arno, Arne, Arnell, Arnel, Arness, Arnot, Arnaldo, Arnoll, Arnulfo, Arnold

Last name origin & meaning:

German, Danish, and Swedish: from a personal name of Germanic origin, composed of the elements arn ‘eagle’ + wald ‘rule’. Compare English Arnold.