Britain's Mystery Schools

On schools in Britain that were (or are) not Christian Monasteries.

Sibyl of Warinsey

Old writers refer to the Witch of Iona and the Sibyl of Warinsey on the island of Guernsey. The Norse lays of Helgi also refer to hags or sibyls on the Channel islands.

Folk tradition held that the tidal island of Mont St Michel had a college of female druids who “distributed to the faithful amulets which possessed marvelous properties and arrows which never missed their mark.”
Ref : Gaels and Gauls

There is the strong possibility that mention of "crows" in many old stories is really saying "old woman/women dressed in black".

Isis
Black Madonna = Isis?

Dún Scáith
"Fortress of Shadows" - home of the legendary Scáthach, the Scottish warrior woman and martial arts teacher who trains the legendary Ulster hero Cú Chulainn in the arts of combat.

College of Theodosius / Cor Tewdws
The author of the Wiki page on College of Theodosius / Cor Tewdws starts by saying it “was a Celtic monastery and college in what is now Llantwit Major.

Mithraic temples
During the Romano-British period, some sacred sites were adopted as Mithraic temples, usually associated with a Roman military site. Others were simply called a "telesterion". One example is the Littlecote Roman Villa.

The final and most interesting phase of construction came around 360 AD when the earlier building was largely demolished. The east, north and west walls were kept intact to form part of a new building that may have been a 'telesterion', a sacred precinct dedicated to the cult of Orpheus and Bacchus. The sacred site included an entrance hall with a double door to a paved courtyard. At the far end of the courtyard is a door giving access to an antechamber with a bath suite to one side and steps on the other leading to a hall with a triple apse - like a three-leaf clover design. This triple apse, or 'triconch', is unique in Britain. The hall was paved with an elaborate mosaic that survives to a remarkable degree.

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