Medlands doesn't affirm marchese Giorgio di Ceva as the father of Aloisia di Saluzzo . Instead, it names Guglielmo [II] (¿ Guglielmo II, marchese di Ceva ?) as her father and an unknown mother, whom might be a daughter of ¿ Manfred II del Vasto, marquess of Saluzzo ? & his wife ¿ Alasia Aleramici, del Monferrato ?
http://fmg.ac/Projects/MedLands/MONFERRATO,%20SALUZZO,%20SAVONA.htm...