This online encyclopedia of terms for students of medieval history is organised on 3 levels, which will be launched in order:

Level 1: a dictionary providing short definitions of legal terms that may be encountered by those looking into mediaeval law. Brevity necessarily requires generalisation and exclusion of some uses.

Level 2: rather longer definitions of some of the terms treated at Level 1, allowing greater nuance.

Leval 3: conversations focussing on a limited number of the terms, looked at to provide the basis for discussion of aspects of mediaeval law.

With the launch of Level 1, we emphasise that this is a collaborative work-in-progress.

We welcome corrections, modifications, and suggestions of further terms to be included. Please remember when recommending corrections and modifications that these entries are intended to be short, preferably one or at most two sentences.

Suggestions should be sent to the project at