The Pageant of England The Magnificent Century @ Uncle to Eleanor Berenger de Provence, son of Thomas de Maurienne Ct de Savoie, no mother.
The cited information was published by Doubleday & Company, Garden City, NY, 1951 (Ref: Uncle to Eleanor Berenger de Provence, son of Thomas de Maurienne Ct de Savoie, no mother.) The author/originator was Thomas B. Costain.