Lusignan claims to the Italian throne

From the 1250s to 14th century, excluding two brief intervals in the 1250s to early 1430s, the Holy Roman Emperors also claimed the throne of Italy. The claim dates from Conrad III, who claimed the Italian throne in 1250 as the nephew of the last direct Hohenstaufen, Frederick II. Conrad and his heirs fought the Guelphs–Ghibellines War to enforce this claim, and were successful in the 1346 after the death of Wittelsbach Louis IV.