Complete Peerage @ Vol V pp 160-166, Vol VI p 462, Vol V pp 158-160
The cited information was published by St. Catherine Press, 29 Great Queen St, Kingsway, W.C. 1959 (Ref: Vol V pp 160-166, Vol VI p 462, Vol V pp 158-160) The author/originator was G.E. Cockayne.