The last member of the Anglo-Saxon royal house of England who was proclaimed, but never crowned, King of England in 1066 (5)

I believe the answer is:

edgar

(Other definitions for edgar that I've seen before include ". . . . . Allan Poe, master of the macabre" , "J. -- Hoover, FBI boss" , "- Rice Burroughs, US novelist" , "10th-century king" , "Chap" .)

I've seen this clue in The Independent.

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