I used to try to track it down by who taught who. Anselm was taught by Lanfranc...but good luck finding much info about him. This is a good place...
http://www.newadvent.org/cathen/
That is a great site. lanfranc is interesting because he is the connecting link between the reemergence of Roman law at Bologna in the 11th century and the reemergence of Greek philosophy in Paris in the 12th.
He was a mentor and teacher to leaders of both movements - a real Renaissance man before the Renaissance. Lawyer, philosopher, ecclesiastic and politician at once.