SOURCE-09770Research NeededProbable
Previté-Orton, Charles William. 1912. The early history of the House of Savoy (1...
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Previté-Orton, Charles William. 1912. The early history of the House of Savoy (1000-1233). Cambridge: Cambridge University Press, p. 148-149. Digital image: Internet Archive. https://archive.org/details/earlyhistoryofho00prevuoft : viewed 7 October 2017.