1217 is not one of the most famous years in English history. But with a major French invasion looming and a brutal war that wracked both towns and the countryside, this was a year that could have altered the nation's history beyond recognition. So, why aren't we more familiar with the events of 1217? Emily Briffett speaks to medievalist Catherine Hanley, author of a new book on the year, to find out.

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The HistoryExtra podcast is produced by the team behind BBC History Magazine.

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