Gareth Mills, historian and tour guide at Pembroke Castle, talks about William Marshall, the man who has been described as 'the greatest knight' and the man who had the stone castle at Pembroke built. Among his many achievements, William Marshall is said to have served five medieval English kings, including Richard the Lionheart and King John.

Find out more about Pembroke Castle including visitor information on their website https://pembrokecastle.co.uk/.

Echoes of the past is a podcast about Pembrokeshire, about history and culture, and about the importance of this corner of Wales to the wider world.

The Echoes of the Past podcast is produced by PLANED (www.planed.org.uk) and is funded by Arwain Sir Benfro (www.arwainsirbenfro.cymru).

Echoes website: http://www.echoeswales.cymru/

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Music: Water Lily - The 126ers https://youtu.be/BQm22usqKds