Complete Peerage, Location: Mid-Continent Library, Independence @ Vol XII/2 pp 19-20, Marlyn Lewis quotes this source & places
her d of her brother, William de Cantelou II
The cited information was published by St. Catherine Press, 29 Great Queen St, Kingsway, W.C., 1959 (Ref: Vol XII/2 pp 19-20, Marlyn Lewis quotes this source & places
her d of her brother, William de Cantelou II) The author/originator was G.E. Cockayne.