She was probably born soon after 1120, but there is no record of her until 1142, when Gualtiero, the archbishop of Ravenna, declared that he was willing to renew the investiture of the castle of Bertinoro to Rainerio di Cavalcaconte on condition that he marry a Frangipane.
[1] In a document dated 29 December 1153, Pope Celestino II granted rights in the feud of Bertinoro to Pietro degli Onesti, tutor to the children of Rainerio – who by then had died – and "Boltruda", presumed to be Aldruda; among the witnesses to the document are Oddone and Cencio Frangipane.
[1] In October 1173 Aldruda led the forces of Bertinoro in the army that relieved the city of Ancona, under siege by troops of the Holy Roman Emperor Frederick Barbarossa under archbishop Christian of Mainz.
[1] In a panegyric to the Byzantine emperor Manuel Komnenos written in 1174, the archbishop Eustathios of Thessaloniki praises the people of Ancona, describing the events of the siege and the part played by Aldruda.
[2]: 195 [3]: 13 Her participation in the relief of the siege is described by Boncompagno da Signa in his Liber de Obsidione Ancone of 1201.