The town of Udbina is the central settlement of the Krbava karst field, the Krbavsko Polje.

Krbava was one of twelve medieval regions that later comprised the later Lika-Krbava County.

[3] Numerous historical sources, mainly in Latin, referred to toponyms within Krbava, most of which have been correlated with modern-day toponymy.

During Croatia in the union with Hungary, nobility were given the title "of Krbava" (de Corbauia).

It has had the following incumbents, so far not of the fitting Episcopal (lowest) but of archiepiscopal (intermediary) rank: