Phillip Campbell (aka Boniface) of http://unamsanctamcatholicam.blogspot.com/ http://unamsanctamcatholicam.blogspot.com/ should be able to point you in the righ

Phillip Campbell (aka Boniface) of http://unamsanctamcatholicam.blogspot.com/ http://unamsanctamcatholicam.blogspot.com/ should be able to point you in the right direction, he is a medieval scholar. Edit: Sorry I don't have any exact citations, he said it in an interview wit Ryan Grant, so I'm sure he has a source he read somewhere.