Walter Scott
From Tardis Wiki, the free Doctor Who reference
The Third Doctor claimed that Sir Walter Scott was an old friend of his. (AUDIO: The Devil's Hoofprints [+]Loading...["The Devil's Hoofprints (audio story)"])
Behind the scenes
The Wreck of the Titan [+]Loading...["The Wreck of the Titan (audio story)"] had previously seen the Sixth Doctor quoting from a poem by Scott, although its source was not identified.