From Germanic 'gund' (battle) and 'heri' (army), meaning battle warrior; appears in the Nibelungenlied.
Gunther is a name built for battle. It descends from the Proto-Germanic compound *Gunþihari*, joining *gunþi* (war, battle-strife) with *hari* (army, host of warriors) — a name that in the ancient Germanic world would have functioned almost as a title, announcing its bearer's purpose. Versions of it appear across the medieval Germanic languages: Günther in High German, Gunnar in Old Norse, Gonthier in Old French, all pointing to the same martial ancestor.
In the great German epic *Das Nibelungenlied* — composed around 1200 CE and a foundational text of Germanic literature — Gunther is King of the Burgundians, the powerful if morally compromised ruler who allies with Siegfried to win Brünhild as his bride. The character is fascinating precisely because he is neither hero nor villain: ambitious, jealous of his great champion, ultimately complicit in a tragedy that destroys everyone. Richard Wagner's *Der Ring des Nibelungen* adapted the legend, making Gunther a tenor role that operagoers have debated for a century and a half.
Outside mythology, Gunther receded in English-speaking countries while remaining in healthy use in Germany and Austria. In the early 1990s it briefly reentered American cultural consciousness as the lovelorn coffeehouse worker Gunther on *Friends* — a gentle, comic figure whose unrequited devotion to Rachel became one of the show's running threads. That association softened the name's martial origins considerably, giving Gunther an unexpected tenderness it has carried into the twenty-first century.