George V of Hanover

George V sided with Austria in the Austro-Prussian War. After Prussia's victory, Hanover was annexed by Prussia, and George V was deposed and went into exile. This ended the independent Kingdom of Hanover.

After the annexation, George V refused to recognize Prussian rule and continued to claim his throne from exile. He maintained a government-in-exile and sought support from other European powers, but was unsuccessful.

George V died in Paris, still in exile. His death marked the end of the active Guelph claim to Hanover, though his son continued the dynasty. He never returned to Hanover after the annexation.