1148 was the first time that the then cardinals, about 50 in total, started using the term ‘The Sacred College of Cardinals.‘
1150 was when Pope Eugene III (#168) created the College of Cardinals — with a Dean.
What I have already said:
Typically, I am the first to admit that I maybe wrong. Fallibility has been my faithful handmaiden throughout my life.
However, in this instance, I have checked, double checked etc. etc., since c. 2007. 1148-1150 is solid for when the College was formed. Even Sacrosanct.
Since the Dean only came to be with the College, there was no Dean of the College prior to 1150.
Yes, we have had a Cardinal Bishop of Ostia since at least the 3rd century. But, the Cardinal Bishop of Ostia was not the Dean till post 1150 — and even then there were inconsistencies.
So just because you see reference on the Web to so and so having been the Dean of the College of Cardinals in 1087 (or whatever) … PLEASE don’t send me e-mails telling me that I screwed up. Yes, I screw-up. But, I do my best to fix my screw-ups as soon as I discover that I have screwed up.
So PLEASE. If you see references like this, contact the ‘author’ of that Web site. Not me. Deal?