Complete Peerage, Location: Mid-Continent Library, Independence @ Vol V pp 158-160, no parents, GEC VI: 151-
The cited information was published by St. Catherine Press, 29 Great Queen St, Kingsway, W.C., 1959 (Ref: Vol V pp 158-160, no parents, GEC VI: 151-) The author/originator was G.E. Cockayne.