Ernestine duchies
Duke Ernest of Gotha and Duchess Elisabeth Sophie's numerous sons divided the inheritance into seven parts: Gotha-Altenburg, Coburg, Meiningen, Römhild, Eisenberg, Hildburghausen and Saalfeld.   The new dukes of Coburg, Römhild and Eisenberg had no children, so their lands were quickly absorbed by the four remaining lines.