Bertha of Savoy [SEP] mother
wife Adelaide of Susa (c. 1014/1020 – 1091) from the Arduinici noble family. She thereby was the sister of Count Peter I of Savoy (d. 1078), Count Amadeus II of Savoy (d. 1080), and Adelaide (d. 1079), consort of the German anti-king Rudolf of Rheinfelden.
Life Marriage.
Still during the lifetime of Emperor Henry III, Bertha at the age of four was betrothed to Henry III's son, Henry IV (aged five) on 25 December 1055
marriage to Otto of Savoy, was the mother of Bertha, empress of Henry IV and of another Adelaide, who married the German anti-king Rudolf of Rheinfelden. Adelaide (died 1091) was the last scion of the house; her heirs were her sons Peter I and Amadeus II of Savoy. The Arduinici possessions in Italy formed the basis for Savoy power there and of the later Duchy of Savoy, Kingdom of Sardinia and Kingdom of Italy.
References.
- M. G. Bertolini, "Arduino", Dizionario