Anglo-Saxon king (6)
I believe the answer is:
alfred
'anglo-saxon king' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for alfred that I've seen before include "Saxon king" , "King after Ethelred" , "English-born film director" , "King of Wessex, known as "the Great"" , "A great king of Wessex, d. 899" .)