On 12 March 1850 , Hohenzollern-Hechingen officially became part of Prussia . Hohenzollern-Hechingen and Hohenzollern-Sigmaringen , which also became part of Prussia in 1850 , were called the Hohenzollernsche Lande . On 12 March 1850 , Hohenzollern-Hechingen officially became part of Prussia , and formed together with Hohenzollern-Sigmaringen the Hohenzollernsche Lande .