Katherine Swynford, Ownership Confirmed (?-1403) by Will.
Joan Beaufort, countess of Westmorland, Ownership Confirmed (c.1403-1440) by Will.
Laynesmith, J.L. "'To Please...Dame Cecely that in Latyn hath litell intellect': Books and the Duchess of York," in The Fifteenth Century XV: Writing, Records, and Rhetoric, ed. Linda Clark (Woodbridge, Suffolk; Rochester, NY: Boydell and Brewer, 2017), 37-56.: 48-49, 55
Raine, James, ed. Historiae Dunelmensis Scriptores Tres (London: J.B. Nichols and Son, 1839).: cclviii