From Wikipedia, the free encyclopedia
Serdica (or Sardica; later Sradetz or Sredets, now Sofia) was the province capital.
Serdica (Sardica, now Sofia, into which the titular see was merged) was the Metropolitan Archbishopric.
- Archbishopric of Justiniana Prima
- Germania in Dacia (Sapareva Banya)
- Velebusdus (Kyustendi; later a Latin Archdiocese).
- Annuario Pontificio 2013 (Libreria Editrice Vaticana, 2013, ISBN 978-88-209-9070-1), "Sedi titolari", pp. 819-1013