I, while his brother Leopold's candidacy for the Spanish throne elicited a French objection that touched of a 19th-century war.  
Early on it was split into two lines, one of which was the Franconian, headed by Conrad I, a descendant of its supposed founder, Burchard I.  One of its members became the first king of Romania as Carol I, while his brother Leopold's candidacy for the Spanish throne elicited a French objection that touched of a 19th-century war.  Beginning as counts, its members first gained power by becoming electors of Brandenburg and later, burgraves of Nuremberg.  Frederick the Great was its most famous member, while Kaiser Wilhelm II was its last ruler.  FTP, name this long-time Prussian dynasty.
Early on it was split into two lines, one of which was the Franconian, headed by Conrad I, a descendant of its supposed founder, Burchard I.  One of its members became the first king of Romania as Carol
Hohenzollern