He participated in the siege of Gotha, which was necessary to arrest the deposed Duke John Frederick II of Saxe-Coburg-Eisenach, who had been banned for failure to deliver Wilhelm von Grumbach at the Emperor's demand.
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William I (1534-1597) received Frankenhausen.
Gunther Schuller | Günther Anders | Super Bowl XLI | Lothar-Günther Buchheim | John Gunther | Hans F. K. Günther | Günther Porod | John Gunther Dean | Günther XLI | Gunther von Hagens | Gunther von Fritsch | Günther Schwab | Günther Oettinger | Gunther Kress | Günther Förg | Anton Günther II | Günther Uecker | Gunther Uecker | Günther Prien | Gunther, Margrave of Merseburg | Günther Jauch | Gunther Forg | Gunther | Bob Gunther | Rita Gunther McGrath | Matthäus Günther | Jyllian Gunther | John Günther I | Günther Weisenborn | Günther Weidlinger |
He was succeeded by his eldest son Günther XLI, however after his death in 1583 his younger brothers again divided the county: John Günther I received the territory around Arnstadt, later called Schwarzburg-Sondershausen, while Albrecht VII inherited the lands of Schwarzburg-Rudolstadt.
He fought in the Netherlands alongside his eldest brother Günther XLI and distinguished himself during the conquest of Saint-Quentin in 1583.
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After his brothers Günther XLI of Schwarzburg-Arnstadt and William I of Schwarzburg-Frankenhausen had died withour male heirs, John Günther I inherited Schwarzburg-Arnstadt and his remaining brother Albert VII inherited Schwarzburg-Frankenhausen.