[1] Her sister was Gisela of Friuli, whose son Berengar II later became king of Italy.
A letter from Archbishop John of Ravenna indicates that Bertha was already abbess of Santa Giulia in Brescia by 908.
[2] The monastery of Santa Giulia (previously San Salvatore) in Brescia was one of the richest and most influential female religious houses in northern Italy.
[3] It was closely connected with royal women, including Engelberga, Bertha's maternal great-aunt.
[4] A diploma issued by Berengar in 917 indicates that in addition to Santa Giulia in Brescia, Bertha was now also the abbess of San Sisto in Piacenza, which had been founded by her aunt, Engelberga.