Dee ihe ọzọ maka paragraf a - N'afọ 1804 Duke Charles Augustus banyere na ndọrọndọrọ ọchịchị Europe site n'ịlụ nwa ya nwoke na onye nketa Charles Frederick na Grand Duchess Maria Pavlovna, nwanne nke Emperor Alexander nke Mbụ nke Russia. Otú ọ dị, n'otu oge ahụ, o sonyeere Prussia n'Agha nke Anọ
megide French Alaeze Ukwu, na mgbe mmeri na Agha nke Jena-Auerstedt a manyere isonye na Napoleon Confederation nke Rhine na 1806. N'afọ 1809 Saxe-Weimar na Saxe-Eisenach, bụ ndị e jikọtara naanị na onye nke duke, jikọtara n'ụzọ iwu na Duchy nke Saxe-Weimar-Eisenach.