The name Illyria only disappears from the historical record after the Ottoman invasion of the Balkans in the 15th century, and re-emerges in the 17th century, acquiring a new significance in the Ottoman-Habsburg Wars, as Leopold I designated as the "Illyrian nation" the South Slavs in Hungarian territory [REF].
The name Illyria was revived by Napoleon for the Illyrian Provinces that were incorporated into the French Empire from 1809 to 1813, and the Kingdom of Illyria (1816-1849) was part of Austria until 1849, after which time it was not used in the reorganised Austro-Hungarian Empire.