Province of Gorizia
Until the 18th century, Breginj was part of the Republic of Venice, and it is still considered part of the historical region known as Venetian Slovenia. Breginj was a comune of the County of Gorizia (as Bergogna), and during Italian rule (1918–1943, nominally lasting until 1947) it was assigned to the Province of Udine, but only until 1927, when it was assigned to the new Italian Province of Gorizia.