Hmmm, according to the Imperial Library in Daggerfall there was a a book called the 'Oghma Infinium' which was a gift from the Daedric Prince Hermaeus Mora which, when read, gave the reader 50 bonsu points to distriubte amongst his attributes 

Perhaps we can have alittle story about teh the book ended up in Julianos' hands. And then hidden deep in the monastery, only to be found at teh end of some quests, the player finds teh book (perhaps a slightly weaker version)

The name of the monastery: Lumen Julianii. 
The name of the monks: the Consulendi 
The protagonists: Arthresius Indigator, an imperial scholar and follower of Julianos 
Adeptus Satiens, his mentor 
Cupidus Scientiae, a mage and a murderer 
The prior of the Consulendi 
The monks of the Lumen Julianii 

And here is the story: 

The Monastery 

Arthresius Indigator, a scholar and a monk dedicated to Julianos living in Dagon Fel, studied for long years the knowledge and the wisdom of the world. One day his mentor, the great Adeptus Satiens decided that it was time to send this promising mind to the only place to introduce Arthresius to the deepest secrests of science and belief he knows of: the Lumen Julianii, a secret and hidden monastery only to be found by those worth it. 

He wanted to give Arthranos a good start, so he gave him some sealed scrolls, describing in enthusiastic words the promising biography and the brilliant achievements of Arthresius.So the scholar began his voyage through Morrowind, initiated into the secret where and how to find the Lumen Julianii. 

In the very heard of the Empire, in Cyrodiil, another promising scholar of the magical arts, Cupidus Scientiae, turned away from the path of wisdom. Intelligent, talented, ruthless and impatient he mixed all known magic without understanding that he toyed with forces much bigger than he was. Ignoring all the wise restrictions, he used darker powers, pawning his own life-energy until these powers absorbed him and maliciously corrupted and twisted his spells. He became addicted to them, having to use more and more of the magic which fed on him on the other hand. 

But in his studies he learned about a place called the Lumen Julianii and about the hidden well of pure magic they are gurading there. Presuming that this would not only cure him from the curse but also would provide him with the ultimate possibility to lay hands on this power he was searching for he decided to find this place. He travelled through the lands of Morrowind, knowing that somewhere the monastery lays hidden. 
By pure chance he stumbled over Arthresius Indigator, who had a last meeting with his friends in Dagon Fel to tell them about his imminent travel. There he decided to follow him secreatly and to kill him, when the passeageway to the monastery was revealed. 

After the murderer to his great surprise he found the sealed scrolls on the body and quickly saw the chance to change his identity and so, taking the other's place, enter the secrets of Lumen Julianii. 

When the PC arrives the place on the surface still seems to be as quite and peaceful as ever, but in reality the prior is deeply concerned about some strange things occuring lately. 

Not only that food mysteriously rots, that people are getting sick without reason and monks are starting to quarrel without an evident cause, no, also the magical well itself seems to change strangely into something darker. That of course is revealed latest. 

Now the PC has to find out what is happening and who is behind all this and deliver the culprit to the prior. 
After speaking with the monks the PC will be able to find the sceleton of Arthresius. 

There are two ways to solve it: 
- the PC can kill Cupidus Scientiae. He will find some excellent spells on the body (nevertheless this mage has been around at the monastery for quite some time). 

- the PC delivers a living Cupidus to the prior. There it is decided to try to heal Cupidus and send him back into the world to make amends for his deeds with the option to once come back to the monastery and fulfill his search out of differrent reasons. 

As a reward the PC will be led through the secret passageway to the magical well itself - the first being brought there, who is none of the monks, able to see on what the Lumen Julianii was founded