 863 also saw the death of Muirecán mac Diarmata, the King of Leinster, at the hands of the Norsemen; so Amlaíb and his allies must also have campaigned south of the Liffey.The following year, however, everything had changed again.Lorcán was blinded by Áed Findliath, and Amlaíb drowned his co-regent Conchobar mac Donnachada at Clonard, an important ecclesiastical site in Mide.