Edward IV of England, Ownership Possible (? - c.1474) by Will.
Anne Wingfield Harling, Ownership Confirmed (?-1498) by Will.
Edmund de la Pole, Ownership Confirmed (1498-?) by Will.
Dutton, Anne M. “Piety, Politics, and Persona: MS Harley 4012 and Anne Harling” in Prestige, Authority and Power (2000).
“The Will of Anne Lady Scrope of Harling, Widow of John Lord Scrope of Bolton” Testamenta Eboracensia: A Selection of Wills from the Registry at York. Ed. J. Raine, 4 vls., Surtees Society 4, 30, 45, 53 (Durham 1836-69), Vol 4, pp.149-54.