Duke of Sparta
Duke of Sparta (Katharevousa: Δοὺξ τῆς Σπάρτης, Demotic Greek: Δούκας της Σπάρτης) was a title instituted in 1868 to designate the Crown Prince of the Kingdom of Greece. Its legal status was exceptional, as the Constitution of Greece forbade the award or acceptance of titles of nobility for Greek citizens.