Stanley was the 9th Earl of Derby, though he was without an official appointment after William of Orange’s Glorious Revolution (1688)
Reference:
John H. Rains, III, Stanley, William George Richard, ninth earl of Derby (16551702), Oxford Dictionary of National Biography, Oxford University Press, 2004 [http://www.oxforddnb.com/view/article/40803, accessed 21 June 2013].
Dates: to
Occupation: Unknown
Relationship to Sloane: Virtual International Authority File: