ブラウンシュヴァイク＝リューネブルク
John thus founded the Old Line of Lüneburg and his brother the Old Line of Brunswick-Wolfenbüttel. Nevertheless, the two principalities continued to form the Duchy of Brunswick-Lüneburg which remained undivided according to Imperial law and all the princes of the various Welf lines carried the title of Duke of Brunswick-Lüneburg.