Richard Barber, a British historian and writer.
<a rel="nofollow" class="external text" href="https://www.youtube.com/channel/UCdW1zR19oxD3JAPmkYWdU5g">SocAntiquaries</a>
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<a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=ocHGSe4kVgQ">10 March 2020: SAL Public lecture (Princely Power in the Middle Ages)</a> (0:00)