Offa was King of Mercia, and was mentioned in Season 2 as the father of Kwenthrith, Burgred, and Kenelm of Mercia.
Biography[]
After King Offa's death, Kenelm took the Mercian throne. Unfortunately, the young king died shortly thereafter and rumors soon started that he was killed by his sister, setting off a nasty civil war as Kwenthrith becomes one of the leading claimants of the Mercian crown.
In History[]
Unlike the series depiction of Kwenthrith being his daughter, Kwenthrith (Cynethryth) was his wife. They had four children: Ecgfrith, Eadburh, Æthelburh, and Ælfflæd. His rule is seen as one based on increasing his power by conquering smaller kingdoms such as Kent and Sussex.[1]