Leopold, Prince of Hohenzollern
Leopold, Prince of Hohenzollern 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 FrancoPrussian War.
He was born into the dynastys surviving Sigmaringen branch, which inherited all the dynastys Swabian lands when the HohenzollernHechingen branch became extinct.
Source: Wikipedia