For research, Roberson used many of the same sources that she employed for Lady of the Forest, including J. C. Holt's Robin Hood, Maurice Keen's The Outlaws of Sherwood, Jim Lees' The Ballads of Robin Hood, Elizabeth Hallam's The Plantagenet Chronicles, and Robert Hardy's Longbow: A Social and Military History, as well as W. L. Warren's King John and the work Swords and Hilt Weapons.
He was an enthusiastic Governor of Blundell's School in Tiverton for many years, the school being linked to Balliol by a scholarship and fellowship foundation gift.
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