A literary biography "Interrogation of Silence", by Rowena Murray and Brian Murray, was published in 2004; "George Mackay Brown: The Life", a more personal biography, by Maggie Fergusson in 2006; and "George Mackay Brown:The Wound and the Gift", a study of GMB's spiritual journey – including his controversial move from Presbyterianism to Roman Catholicism – by Ron Ferguson, in 2011.