AI overview
I can see that "839" appears to be a year, but without additional context about what specifically happened in or about that year, I cannot write an accurate overview for a general reader. Could you provide more information about what aspect of 839 you'd like explained?
AI-generated from the Wikipedia summary — may contain errors.
Article
King Æthelwulf of Wessex (839–858)
Year 839 (DCCCXXXIX) was a common year starting on Wednesday of the Julian calendar.