Ageltrude or Agiltrude (around 860 – 27 August 923) was the Empress and Queen of Italy as the wife of Guy (reigned 891–894).
[1][2] She was the regent for her son Lambert (reigned 894–898) and actively encouraged him in opposing the Carolingians, and in influencing papal elections in their favour.
[1] Guy of Spoleto defeated Berengar to became King of Italy in 889, and then, in 891, he was crowned Holy Roman Emperor, making Ageltrude empress.
[5][6] In 894, Ageltrude accompanied her 14-year-old son, Lambert, to Rome to be confirmed as emperor by Pope Formosus, who supported the Carolingian claimant Arnulf of Carinthia.
At her and Lambert's request, the body of Pope Formosus was disinterred, given a full trial on accusations of transferring one see to another, convicted, and his corpse was hurled into the Tiber, in an event that came to be known as the Cadaver Synod.