In 1953 'Crazy Cock' made a pilgrimmage to Corwen to visit his literary idol John Cowper Powys.
The great African-American novelist spent time in Swansea during WW2 whilst serving in the merchant marine. He even wrote some short stories with a Welsh setting including: The Red Cross at Morriston, Swansea S.W. and In a Strange Country.
Conrad visited South Wales on several occasions. In 1896 he spent Christmas and New Year with Polish friends in Cardiff. During one particular stay he worked on his manuscript for The Nigger of the Narcissus.
School master at the Holt Academy near Wrexham in 1887.
During the summer of 1967 Beat poet Ginsberg stayed at a cottage in Wales, dropped some acid and wrote the poem: Wales Visitation.
Once did a reading at the Oriel bookshop in Charles Street, Cardiff.
Along with Gore Vidal he was guest in chief at the Hay-on-Wye book festival in 2000.
Twain chose the name Cardiff Hill in The Adventures of Tom Sawyer after visiting Cardiff, Wales. The cliffs there, he remarked, reminded him of the hill in Hannibal - where the book is set. If anybody knows which cliffs he was referring to... don't hesitate to email and enlighten me.
Ultra cool Japanese writer developed an obsession for the poetry of RS Thomas and simply had to come to Wales to recite the Welshman's work aloud.
Toured Wales in 1959 whilst researching a book on King Arthur. The Acts of King Arthur and his Noble Knights was published posthumously in 1976.
Writer, journalist and former Mrs Ernest Hemmingway lived near Chepstow for a while in her cottage: Catscradle. She wrote one particularly good piece on the miners' strike contrasting the community spirit of Valleys women with the Lady Macbeth-like evil of Thatcher.