The conversation between human and AI assistant.
[|Human|] Where does the name of the UK county 'Essex' originate from?
[|AI|] The name Essex originates in the Anglo-Saxon period of the Early Middle Ages and has its root in the Anglo-Saxon (Old English) name Äastseaxe ("East Saxons").
[|Human|] 
Where does the name of the UK county 'Essex' originate from?