A continuation of the Chronica Jacobi de Aquis names "Bonifacio" as oldest child of "Manfredo…Marchese…di Salucio" and his wife "Alasia figlola di Gulielmo Marchese di Monferrato". "Bonifacius filius comitissæ…" witnessed the charter dated 1192 under which "Petrus Manisel filius quondam Dominici Manisel et eius nepos Oto Manisel filius quondam Johannis Manisel, D. Adalasiæ comitissæ de Saluciis" donated property to "monasterio sancti Laurentii de Ulcio". His parentage is confirmed by the marriage contract between "Marchese Bonifazio figlio del Marchese Manfredo di Saluzzo" and "Maria figlia di Comita Signore di Sassari in Sardegan" dated Aug 1202.
The date of his death is set by the marriage contract dated 28 Apr 1213 between "Thomam comitem Maurienne…Amedeo f. dicti comitis" and "Manfredum II marchionem de Saluciis…Agnetem f. quondam Bonefacii." 1