One of my favorite blogs in recent months has been the irregularly updated Got Medieval blog by Carl Pyrdum. The blog is at its best when it is examining the marginalia in medieval manuscripts, as in this posting from today.
Bayeux Tapestry detail: Coronation of Harold, created by Myrabella, 2013, used under Creative Commons license
The text of Wordorigins.org by David Wilton is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License