Complex sentence: Mavro Orbin (1563--1614) was a Ragusan writer, ideologue and historian, notable for his work "The Realm of the Slavs" which influenced Slavic ideology and historiography in the later centuries.
Split into simpler sentences: Mavro Orbin (also Mavro Orbini, Mauro Orbin, or Mauro Orbini) (mid- 16th century--1614) was a writer, ideologue and historian from the Republic of Ragusa. His work "The Realm of the Slavs" influenced Slavic ideology and historiography in the later centuries.