Circa 1300 (possibly much earlier) was established a Diocese of Balecium alias Balezo.
At the beginning of the 14th century, Baleč (alias Baleš) was the see of a small Catholic diocese.
[2] The diocese had been laid waste and impoverished by Serbian "schismatics of the kingdom of Rascia", who had completely destroyed the monastery situated 5000 paces from the cathedral.
In response, Pope Innocent VI granted him in commendam, on 26 September of the same year, the Benedictine monastery of St. John in Drivast.
(all Roman Rite) The bishopric of Balecium, no longer a residential see, is today listed by the Catholic Church as a titular see[8] since it was nominally restored as Latin titular bishopric under the names Balecium (Latin; adjective Balcien(sis) ) or Balecio (Curiate Italian).