Either Harrison or his source slipped up over the identity of this Athelstan, who was the son of Aethelwulf, son of Ecgberht, and is recorded by Anglo-Saxon Chronicle `A' as becoming ruler, under his father, of Kent, with Essex, Surrey and Sussex, in 836. Ine had resigned the kingship of Wessexin 726 in order to retire to Rome, and is not recorded as having left a son. `Heretoch' is Anglo-Saxon `here-toga', meaning a commander, general or chieftain, not an inappropriate title for an under-king.