Question: What is the date of death of Frederuna's husband?
Sentence (from "Charles the Simple"): Charles III (17 September 879 – 7 October 929), called the Simple or the Straightforward (from the Latin "Carolus Simplex"), was the King of West Francia from 898 until 922 and the King of Lotharingia from 911 until 919–23.
Relevant evidence: Yes