Claim: In 1866, Hannover (capital and largest city of the German state of Upper Saxony) triumphed and annexed by Prussia at the end of the Austro-Prussian War, and as a result, Prussia dissolved the three Hanoverian orders of knighthood.
Evidence: Hanover (/ˈhænoʊvər, -nəv-/; German: Hannover [haˈnoːfɐ (listen); Low German: Hannober) is the capital and largest city of the German state of Lower Saxony. 
Lower Saxony