There was only one book in the house when he was born, Ms Rosier-Jones said, of the man who went on to be tutored by CS Lewis at Oxford University and supervised by JRR Tolkien for his preparation of an edition of the Ormulum. The Chicago Herald called Dr Burchfield "the greatest lexicographer".
The tour also went to Tregarth St to the home of mid-19th Century writer Emily Marshall-White and the group was invited by the present owners to look around the garden and home.
"What a wealth of literary writers there are here," Ms Rosier-Jones said at the book fair, where some of those authors spoke or read their works.
Former gardening guru, the late Ken Parnell's Gardening Guide was on sale, as was Hazel Menehira's Nothing as Posh as a Memoir, Hannah Rainforth and Ali Teo's Barnaby Bennett, and Basil Avery's Excelsior, the R&E Tingey Story, alongside others.