Ancient Diocese of Senlis

Its see was at Senlis, in the modern department of Oise, in northern France.

[1] Rieul of Senlis is considered the first bishop, probably around the early fourth century.

[2] The first cathedral was built in the late 4th or early 5th century, within the perimeter of the city walls.

[3] According to Alban Butler, Liudhard (Léthard) was chaplain of the Frankish princess Bertha, and resigned the see in order to accompany her to Britain when she married Æthelberht of Kent.

Construction of the Cathédrale Notre-Dame de Senlis was started around 1151 on the site of older sanctuaries, under Bishop Pierre.