Leopold zu Hohenzollern-Sigmaringen

(1835 – 1905) was the head of the Swabian branch of the House of Hohenzollern, and played a fleeting role in European power politics, in connection with the Franco-Prussian War.
He was born into the dynasty’s surviving Sigmaringen branch, which inherited all the dynasty’s Swabian lands when the Hohenzollern-Hechingen branch became extinct.
Leopold was the older brother of King Carol I of Romania and father of the future King Ferdinand of Romania. Carol ascended the Romanian throne in 1866, and Leopold renounced his rights to the Romanian succession in favour of his sons in 1880.