The "Chronicle" was compiled on the orders of Alfred the Great, brother-in-law of King Burgred. This account is considered to be biased and politically motivated, written with a view of strengthening the claims of Alfred and Edward the Elder to the overlordship of Mercia, evidenced by a 2015 find of Anglo-Saxon Imperial coins dated to around 879 CE, near Leominster, presumed to have been buried by retreating Vikings. The coins depict both Ceolwulf as a king as well as Alfred, leading some experts to indicate that the two were equals. According to Gareth Williams of the British Museum, "these coins enable us to re-interpret our history at a key moment in the creation of England as a single kingdom."  