We would like to thank Anna Walker for the contribution to this article.

Most of us think we know something about Jane Austen. As I began research for Jane Austen’s Paper Trail – a new podcast from The Conversation marking 250 years since her birth – I certainly believed I did.

Perhaps, like me, you’ve read her novels or enjoyed one of the many screen adaptations. Maybe you’ve seen her portrait, painted by her sister Cassandra, hanging in the National Portrait Gallery – or gazing serenely from a £10 note. But the more I learned about Austen, the more she seemed to slip away.

The image that adorns countless books, tea towels and souvenirs isn’t actually Cassandra’s painting at all. It’s an embellished copy: a Victorian engraving by William Home Lizars, who took the unfinished original

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