This is by no means a comprehensive list of subject terms, but it can definitely get you started! Subject headings allow you to change out categories (for example, switching out countries, time periods, etc.).
Great Britain--Social life and customs--1066-1485
France--Intellectual life--To 1500
Authors, Latin (Medieval and modern)--Italy--Correspondence
Héloïse, approximately 1095-1163 or 1164
Europe -- History -- 476-1492.