| Date | Event | From | To |
|---|---|---|---|
| Diocese of Thérouanne | |||
| 7th Century | Erected | Diocese of Thérouanne (erected) | |
| 12 May 1559 | Territory Lost | Diocese of Thérouanne | Diocese of Saint-Omer (erected) |
| Diocese of Boulogne (-Sur-Mer) | |||
| 3 March 1566 | Name Changed | Diocese of Thérouanne | Diocese of Boulogne (-Sur-Mer) |
| 29 November 1801 | Suppressed | Diocese of Boulogne (-Sur-Mer) (suppressed)
Diocese of Saint-Omer (suppressed) | Diocese of Arras |
|
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Copyright David M. Cheney, 1996-2025 Code: web_d, v3.4.9, 15 Sep 2024; Data: 20 May 2025 | |
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