Notes
A version of this paper was presented to the Medieval German Seminar at the University of Oxford on 1 December 2010, and I am very grateful to the members of the seminar for their feedback. I should also like to thank Michael Gervers at the University of Toronto for discussing some of this material with me many years ago; the two anonymous readers of this journal for their comments; and Helen Buchanan at the Taylor Institution Library for her efforts in obtaining otherwise unavailable scholarship for me.