The primary source which confirms her parentage and marriage has not yet been identified. 1
Marriage Information:
Unnamed daughter of Riprando DI PIACENZA married Signor Oddone DEL MARCHIO DI MONFERRATO, son of Signor Aleramo DEL MARCHIO DI MONFERRATO and unknown 1st wife. (Oddone DEL MARCHIO DI MONFERRATO died before 991.)
Sources
1 Foundation for Medieval Genealogy, Medlands: di Piacenza.