| Date | From | To | ||
|---|---|---|---|---|
| 13th Century | Diocese of La Calzada, Spain | Erected | ||
| 13th Century | Diocese of Calahorra, Spain
Diocese of La Calzada, Spain | United | Diocese of Calahorra y La Calzada, Spain | United |
| 13th Century | Diocese of Chios, Greece | Erected | ||
| 13th Century | Diocese of Cefalonia, Greece | Erected | ||
| 13th Century | Diocese of Naxos, Greece | Erected | ||
| 13th Century | Diocese of Oppido Mamertina, Italy | Erected | ||
| 13th Century | Diocese of Noli, Italy | Erected | ||
| 13th Century | Diocese of Syros e Milos, Greece | Erected | ||
| 13th Century | Diocese of Ugento, Italy | Erected | ||
| 13th Century | Diocese of Warmia, Poland | Erected | ||
| 13th Century | Territorial Abbey of San Martino al Monte Cimino, Italy | Erected | ||
| 13th Century | Archdiocese of Durrės, Albania | Erected | ||
| 13th Century | Diocese of Luceoria o Luck, Ukraine | Erected | ||
| 13th Century | Order of Friars Preachers | Founded | ||
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