Historians have different opinions on Tropolje's borders.
Vjekoslav Klaić thought that Tropolje encompassed the
Cetinsko Polje,
Livanjsko Polje and
Duvanjsko Polje, and possibly other poljes on the borderland of Croatia, Bosnia, and Zachlumia.
Marko Perojević, on the other hand, argued that Tropolje included the
Kosovo Polje (near
Knin),
Petrovo Polje (near
Drniš) and
Mućko Polje. Additionally,
Dominik Mandić included Livanjsko Polje as well.
Sima Ćirković held that Tropolje stretched over Livanjsko Polje, Duvanjsko Polje and
Glamočko Polje.
Krunoslav Draganović and
Damir Karbić argued that Tropolje included Duvanjsko Polje,
Kupreško Polje, and Glamočko Polje. Karbić, agreeing with Draganović, said that a document from 1301 supports his conclusion and that the northern borders thus defined, fitted the borders of the
Diocese of Duvno. The document from 1301, to which Karbić was referring, mentions the sons of
Paul I Šubić of Bribir –
Mladen,
George and
Paul, as "Duke of Tropolje,
Livno and
Cetina", who adopted the title on the verge of the 13th to 14th century after securing the territory of the eastern
Adriatic hinterland. == Footnotes ==