Here's the list
. Here's part of the Wikipedia entry on Matilda of Tuscany
Matilda became a widow on 26 February 1076. Godfrey the Hunchback was assassinated in Flanders while "answering the call of nature". Having been accused of adultery with the Pope the previous month, Matilda was suspected of ordering her estranged husband's death. She could not have known about the proceedings at the Synod of Worms at the time, however, since the news took three months to reach the Pope himself, and it is more likely that Godfrey was killed at the instigation of an enemy nearer to him.